TEST: KINEMATICS

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. A mountain climber hikes 25.5 km from her base camp, going 20.0º north of east. On the second day, she walks 41.0 km in a direction 65.0º north of east, at which point she has reached a summit. Determine the magnitude and direction of her resultant displacement between the base camp and the second camp. (Remember to analyze the two motions separately, and then add and use Pythagorean theorem for the resultant and trigonometry for the angle.)

(essay question) You can find the answer on Brainly.com This got me partial credit: 42 degrees north of east and a displacement of 62 km. (approximate values)

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. During a treasure hunt, Cody walks 45.0 m south and 7.50 m to the west. What single straight-line displacement could Cody have taken to reach the treasure? (Remember that magnitude and angle and direction are all needed for your answer.)

(essay question) You can find the answer on Brainly.com This got me partial credit: 46 meters displacement and 80 degrees West of South. (approximate values)

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. When a car is 200 meters from its starting position traveling at 30. m/s., it starts braking and comes to a stop 350 meters from its starting position in 10. s. Calculate the acceleration. _____ m/s2 -4.0 -30. -3.0 -7.0

-3.0

A caterpillar tries to climb straight up a wall a meter high, but for every 2 cm. up it climbs, it slides down 1 cm. Eventually, it reaches the top. When it reaches the top, it does not pull itself over so it will slide down 1 cm. At this point, the caterpillar was exhausted and fell to the ground. What is the total displacement? ___cm

0cm

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. State this distance in centimeters. 1 x 10^18 cm 1 x 10 14 cm 1 x 10 15 cm 1 x 10 17 cm

1 x 10^18 cm

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. A missile is fired from a jet flying horizontally at Mach 1 (1100 ft/s). The missile has a horizontal acceleration of 1000 ft/s2. Calculate its horizontal velocity at 10.0 seconds after it is fired. (Assume constant acceleration of the missile throughout its flight.) 1,220,000 ft/s 12 00 ft/s 11,100 ft/s 11 00 ft/s

11,100 ft/s

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. An object is dropped from a platform100 ft high. Ignoring wind resistance, how long will it take to reach the ground? 2.5 s 1.8 s 6.3 s 4.5 s

2.5 s

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. You hit a golf ball 30.0 m to the south and overshoot the hole. You then hit the ball another 5.0 m back to the north. What is the ball's displacement? ___ m ___

25 m S

Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. State the speed in km/s, using scientific notation. 3 x 10^5 km/s 3 x 10^12 km/s

3 x 10^5 km/s

^Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. State the speed in m/s, using scientific notation. 3 x 10^8 m/s 9 x 10^0 m/s 7 x 10^15 m/s

3 x 10^8 m/s

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. If a car goes along a straight road heading east and speeds up from 45 ft/s to 60 ft/s in 5 s, calculate the acceleration. a =___ ft/s^2 ___

3, E

Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. State the number of seconds in one year, using scientific notation. 3 x 10^7 s 3.0 x 10^7 s 3.2 x 10^7 s

3.2 x 10^7 s

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. An American Red Cross plane needs to drop emergency supplies to victims of a hurricane in a remote part of the world. The plane is traveling horizontally at 100.0 m/s at a height of 50.0 m above the ground. What horizontal distance does the package travel before striking the ground? x = ___ m

319

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. A car travels from City A to City B to the east. It takes 2 hours, and the road mileage is 100 miles. The map shows that the cities are only 80 miles apart (straight-line distance). Calculate the average velocity. ___ mph ___

40 mph E

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. City B is north of City A, and the 400 mile trip by car takes 8 hours. The cities are 320 miles apart in a straight line. What is the velocity of a trip from City A to City B? ___ mph ___

40 mph N

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. If a car travels 30 mi. north for one-half hour, 50 mi. east for one hour, and 30 mi. south for 30 min., what is the total displacement of the car? ___ mi ___

50 mi E

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. An object is dropped from a platform100 ft high. Ignoring wind resistance, what will its speed be when it reaches the ground? 1963 ft/s 44 ft/s 80.0 ft/s 6400 ft/s

80.00 ft/s^2

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. Calculate the distance in meters of one light year. 9.6 x 10^15 m 9.4 m 1 x 10 16 m 9 m

9.6 x 10^16 m

A caterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. Eventually, it reaches the top. When it reaches the top, it does not pull itself over so it will slide down 1 cm. What is the total displacement traveled? (Include direction, whether up, down, or n/a.) ___cm___

99 up

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. A person walks along a road 2 miles and rests. Then taking another road, he travels 3 miles; and switching to a dirt path, he walks 2 miles before arriving at his destination. The distance the person has traveled is 7 miles. True False

True

Always use significant figure rules. Remember that these rules apply to all numbers that are measurements. A train goes up a hill with a 15º incline. If the train has constant speed of 22 m/s, what are the vertical and horizontal components of the train's velocity? (Remember to use the law of sine and cosines for this problem) y = ___ m/s x = ___ m/s

y=5.7 x=21