Question

22 When will you say a body is in(i) uniform acceleration?(ii) non-uniform acceleration? A racing car has a
uniform acceleration of + in s What distance will it cover in 10 s after start?​

Answer 1

Explanation:

Given:

Initial velocity is: u=0

Acceleration is: a=4 ms

2

Time is: t=10 s

Using second equation of motion:

s=ut+

2

1

at

2

s=0×10+

2

1

×4×10

2

• =0+200=200 m

Answer 2

Explanation:

(i) A body is said to be in uniform acceleration if it travels in a straight line and its velocity increases or decreases by equal amounts in equal time intervals.

(ii) A body is said to be in non-uniform acceleration if the rate of change of its velocity is not constant, that is differs in different time intervals.

D= 10 sec.

A= m change into sec = 1hr=60 sec = 60sec ÷4 m= 15sec .

hope this answer will help you