A car travels in a straight line for 4.8 h at a constant speed of 88 km/h . What

Question

A car travels in a straight line for 4.8 h at a
constant speed of 88 km/h .
What is its acceleration?
Answer in units of m/s
2

A rocket-driven sled running on a straight,
level track has been used to study the physiological e?ects of large accelerations on astronauts. One such sled can attain a speed of
424 m/s in 1.6 s starting from rest.
What is the acceleration of the sled, assuming it is constant?
Answer in units of m/s
2
How many g s would you pull? That is, what
factor times g is this?
How far does the sled travel in 1.6 s, starting
from rest?
Answer in units of m

A car traveling in a straight line has a velocity
of 5.22 m/s at some instant. After 6.02 s, its
velocity is 13.3 m/s.
What is its average acceleration in this time
interval?
Answer in units of m/s
2

The barrel of a ri?e has a length of 0.815 m. A
bullet leaves the muzzle of a ri?e with a speed
of 602 m/s.
What is the acceleration of the bullet while
in the barrel? A bullet in a ri?e barrel does
not have constant acceleration, but constant
acceleration is to be assumed for this problem.
Answer in units of m/s
2

Explanation / Answer

1) 0 m/s2 2)265m/s2 3)27 times 4)339.2m 5)1.342 m/s2 6)222333m/s2

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