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QUESTION

# Stion 1A body with initial velocity 8.0 m/s moves along a straight line with constant accelerationand travels 640 m in 40 s. For the 40 s interval, find (a) the average velocity, (b) the finalvelocity

Stion 1

A body with initial velocity 8.0 m/s moves along a straight line with constant acceleration

and travels 640 m in 40 s. For the 40 s interval, find (a) the average velocity, (b) the final

velocity, and (c) the acceleration.

A) (a) 4.0 m/s, (b) 8.0 m/s, (c) 0.6 m/s2

B) (a) 24 m/s, (b) 16 m/s, (c) 0.20 m/s2

C) (a) 16 m/s, (b) 24 m/s, (c) 0.40 m/s2

D) (a) 0.4 m/s, (b) 160 m/s, (c) 16 m/s2

Question 2

A box slides down an incline with uniform acceleration. It starts from rest and attains a

speed of 2.7 m/s in 3.0 s. Find (a) the acceleration and (b) the distance moved in the

first 6.0 s.

A) (a) 2.22 m/s2, (b) 16 m

B) (a) 8.1 m/s2, (b) 2.7 m

C) (a) 0.3 m/s2, (b) 32.4 m

D) (a) 0.90 m/s2, (b) 16 m

Question 3

An auto's velocity increases uniformly from 6.0 m/s to 20 m/s while covering 70 m in a

straight line. Find the acceleration and the time taken.

A) 0.1 m/s2, 5.4 s

B) 2.9 m/s2, 10 s

C) 5.4 m/s2, 3.5 s

D) 2.6 m/s2, 5.4 s

Question 4

A train running along a straight track at 30 m/s is slowed uniformly to a stop in 44 s. Find

the acceleration and the stopping distance.

A) 0.68 m/s2, 1320 km

B) 1320 m/s2, 1978 km

C) -0.68 m/s2, 0.66 km

D) -0.03 m/s2, 1335 km

Question 5

A marble dropped from a bridge strikes the water in 5.0 s. Calculate (a) the speed with

which it strikes and (b) the height of the bridge.

A) (a) 1.96 m/s, (b) 49 m

B) (a) 49 m/s, (b) 120 m

C) (a) 123 m/s, (b) 245 m

D) (a) 24.5 m/s, (b) 24.5 m

Question 6

A stone is thrown straight downward with initial speed of 8.0 m/s from a height of 25 m.

Find (a) the time it takes to reach the ground and (b) the speed with which it strikes.

A) (a) 1.6 s, (b) 24 m/s

pls working needed

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