Unit 2 - Chapter 13 - Linear Velocity and Acceleration

A plane is flying at 600 km/h and reduces its velocity uniformly to 70 km/h in 3 minutes. What is its acceleration? 2 a) -0.818 m/s 2 b) -49.07 m/s 2 c) -176.67 m/s 2 d) -2.42 m/s 2 e) -3.33 m/s

a

A train starts off from rest and reaches a velocity of 100 km/h in 8 minutes. If the velocity increases uniformly, how far will the train travel in the first 8 minutes? a) 6.67 km b) 7.43 km c) 8.50 km d) 9.25 km e) 9.76 km

a

An object is dropped from a height of 55 m. What will its velocity be on impact? a) 32.85 m/s b) 43.57 m/s c) 56.43 m/s d) 68.79 m/s e) 72.12 m/s

a

The SI unit for acceleration is a) m/s2 b) m/s3 c) m/s d) km/h e) km/s

a

A body moves from Point A to Point B in a semicircular path. The diameter of the semicircle is 2 m. Calculate the distance between Point A and Point B. a) 6.28 m b) 3.14 m c) 2.07 m d) 1.04 m e) 0.52 m

b

A body moves from Point A to Point B in a semicircular path. The radius of the semicircle is 2 m. Calculate the displacement between Point A and Point B. a) 2 m b) 4 m c) 6 m d) 8 m e) 10 m

b

A car has an initial speed of 25 km/h and in 84 seconds it accelerates to 110 km/h. What is the distance travelled during the acceleration period? a) 2575 m b) 1575 m c) 757 m d) 575 m e) 455 m

b

A car travelling at 90 km/h is brought to rest over a distance of 120 m. What is the acceleration in metres per second squared? a) 2.6 b) -2.6 c) 1.3 d) -1.3 e) -2.0

b

A vehicle that travels 150 km in 3 hours, a) has a velocity of 50 km/h b) has an average speed of 50 km/h c) has a relative velocity of 50 km/h d) covers a distance of 50 km e) has a velocity of 750 km/h

b

The SI unit for velocity is a) km/s b) m/s c) m/hr 2 d) m/s 2 e) m /s

b

Velocity is a) a scalar quantity b) a vector quantity c) a standard quantity d) an average quantity e) a maximum quantity

b

A body moves from A due east 5 m to B, then from B due north 6 m to C and finally from C due west 5 m to D. Calculate the total distance covered from A to D. a) 4 m b) 5 m c) 6 m d) 7 m e) 19 m

c

A car has an initial speed of 35 km/h and in 75 seconds it accelerates to 120 km/h. What is the distance travelled during the acceleration period? a) 2435 m b) 1875 m c) 1614 m d) 1567 m e) 1463 m

c

A car travelling at 18 km/h increases its velocity uniformly to 48 km/h in 6 seconds. What is the acceleration in metres per second squared? a) 1.12 b) 1.23 c) 1.39 d) 1.45 e) 1.57

c

A vehicle travelling at 90 km/h decelerates uniformly to 50 km/h in 9 seconds. How far will the vehicle travel in this time? a) 125 m b) 150 m c) 175 m d) 200 m e) 225 m

c

An airplane travels 250 km due West for 2 hours. Its average velocity is a) 150 m/s West b) 250 m/s West c) 34.722 m/s West d) 69.4 m/s East e) 500 km/h East

c

An airplane travels 500 km due west in 2 hours. Its average velocity is a) 250 m/s due west b) 4167 m/s due west c) 69.4 m/s due west d) 69.4 m/s due east e) 1000 km/h due east

c

A vehicle starts off from rest and reaches a velocity of 80 km/h in 12 seconds. If the velocity increases uniformly, how far will the train travel in the first 12 seconds? a) 188.87 m b) 177.76 m c) 166.70 m d) 133.33 m e) 113.33 m

d

According to Newtons laws of motion which statement is false? a) A body at rest will remain at rest unless acted upon by an external force. b) If a body is acted upon by an external unbalanced force the body will have an acceleration in the direction and proportional to the magnitude of the force. c) For every action there is an equal and opposite reaction. d) A body in motion will come to rest unless acted upon by an external unbalanced force. e) When one object exerts a force on a second object the second object exerts a reactive force of equal magnitude and opposite direction on the first object.

d

An object is dropped from a height of 45 m. What will its velocity be on impact? a) 882.9 m/s b) 441.5 m/s c) 22.50 m/s d) 29.71 m/s e) 31.76 m/s

d

The area under a velocity vs. time graph equals: a) distance b) speed c) acceleration d) displacement e) average velocity

d

A body moves from A due east 5 m to B, then from B due north 6 m to C and finally from C due west 8 m to D. Calculate the total distance covered from A to D. a) 11 m b) 13 m c) 14 m d) 17 m e) 19 m

e

A car travels a total of 350 km. The journey involves a total of 3 hours driving time and 45 minutes of stop time. What is the average journey speed? a) 101.4 km/h b) 71.7 km/h c) 116.7 km/h d) 107.7 km/h e) 93.3 km/h

e

Acceleration is measured in: a) m b) m2/s c) m/s d) s/m e) m/s2

e

Acceleration may be defined as the rate of change in a) time b) distance c) area d) volume e) velocity

e

An object is thrown directly downwards from a height of 60 m with an initial velocity of 11 m/s. What will be its velocity on impact? a) 34.5 m/s b) 1,289.16 m/s c) 24.2 m/s d) 126.38 m/s e) 36.03 m/s

e

Velocity may be defined as a) speed b) linear speed c) rotational speed d) speed in a given time e) speed in a given direction

e

Which of the following statements about acceleration is true? Acceleration is: a) time / velocity b) force / time c) the rate of change of displacement d) time / force e) the result of an unbalanced force exerted on a body

e