ch 1

-.95 m/s

It takes harry 38 s to walk from x1 = -10 m to x2 = -46 m what is his velocity?

3.61 km

Joe and Max shake hands and say goodbye. Joe walks east 0.65 km to a coffee shop, and Max flags a cab and rides north 3.55 km to a bookstore. how far apart are there destinations?

-15 m

Keira starts at position x = 26 mm along a coordinate axis. She then undergoes a displacement of -41 m . What is her final position?

so that you can see if the answer to a problem makes physical sense

Making rough estimates of physical quantities is useful ...

kg x m2 / s2

One consequence of Einstein's theory of special relativity is that mass is a form of energy. This mass-energy relationship is perhaps the most famous of all physics equations: E=mc2 where m is mass, c is the speed of the light, and E is the energy. In SI units, the units of speed are m/s. For the preceding equation to have consistent units (the same units on both sides of the equation), the units of E must be which of the following?

8 m/s Average velocity is defined in terms of displacement, whereas average speed is defined in terms of total distance traveled.

Suppose a runner completes one lap around a 400-m track in a time of 50 s. Calculate the average speed of the runner.

0 m/s Average velocity is defined in terms of displacement, whereas average speed is defined in terms of total distance traveled.

Suppose a runner completes one lap around a 400-m track in a time of 50 s. Calculate the magnitude of the average velocity of the runner.

5.1477 mi 1 mile = 5280 ft 3 ft= 1 yard

Suppose that a particular artillery piece has a range R = 9060 yards . Find its range in miles.

- The magnitude of your displacement can be equal to your distance traveled. -The magnitude of your displacement can be less than your distance traveled.

Suppose you are hiking along a trail. Make a comparison between the magnitude of your displacement and your distance traveled.

velocity contains information about the direction of motion while speed does not

What is the difference between speed and velocity?

.4469 m/s 1 mile = 1609m 1 hour = 3600s

What is the speed of a car going v=1.000mph in SI units?

A. -10 m/s B. -5 m/s C. -10 m/s

(Figure 1) shows the motion diagram for a horse galloping in one direction along a straight path. Not every dot is labeled, but the dots are at equally spaced instants of time. (s) 70 - 50 - 30 - 10 - - - - - - - - - 50 150 250 300 350 400 500 600 (m) A. what is the horses velocity during the first 10 seconds of its gallop? B. What is the horse's velocity during the interval from 30 - 40 seconds? C. What is the horse's velocity during the interval from 50 - 70 seconds?

5 m/s

10 meters in 2 seconds average velocity over the time interval

.38 m

15 in = __ m

17 m/s

56 ft/s = __ m/s

29 m/s

66 mph = __ m/s

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A car skids to a halt to avoid hitting an object in the road. Select the correct motion diagram of the car from the time the skid begins until the instant the car stops.

The car started 11 mi east of Mulberry Road.

A car travels along a straight east-west road. A coordinate system is established on the road, with x increasing to the east. The car ends up 16 mi west of the origin, which is defined as the intersection with Mulberry Road. If the car's displacement was -27 mi, on what side of Mulberry Road did the car start? How far from the intersection was the car at the start?

1.125 m/s

A dog trots from -12 m to 5 m in 16 s. What is its velocity?

- - - - - - - - - - - - - - - 1. 2. 3. 4. 5. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.

A man rides a bike along a straight road at a constant speed for 5 min, then has a flat tire. He stops for 5 min to repair the flat, but then realizes he cannot fix it. He continues his journey by walking the rest of the way at a constant speed, which takes him another 10 min.

h = 6.1 m

Black vultures excel at gliding flight; they can move long distances through the air without flapping their wings while undergoing only a modest drop in height. A vulture in a typical glide in still air moves along a path tipped 3.5∘ below the horizontal. If the vulture moves a horizontal distance of 100 m, how much height does it lose?

750 m

Foraging bees often move in straight lines away from and toward their hives. Suppose a bee starts at its hive and flies 500 m due east, then flies 360 m west, then 610 m east. how far away does the bee end up

m3/kg x s2

Gravity causes objects to be attracted to one another. This attraction keeps our feet firmly planted on the ground and causes the moon to orbit the earth. The force of gravitational attraction is represented by the equation F=Gm1m2/r2 where F is the magnitude of the gravitational attraction on either body, m1 and m2 are the masses of the bodies, r is the distance between them, and G is the gravitational constant. In SI units, the units of force are kg⋅m/s2, the units of mass are kg, and the units of distance are mm. For this equation to have consistent units, the units of G must be which of the following?

216.662 cm 2.54 cm = 1 inch

How many centimeters are there in a length 85.3 inches?

are spaced at equal distances apart

If an object is in uniform motion, the dots on a motion diagram ...