Question

5) Abody is moving with velocity of 3m/s at time 4 sec. It become 8 m/s. Find the
acceleration of body. (1 marks )
s.
1.50 m/sq.sec
1.75 m/sq.sec
1.95 m/sq.sec
1.25 m/sq.sec
​

Answer 1

Answer:

d) 1.25 m/sq.sec

Explanation:

acceleration = (final velocity - initial velocity )/time

= (8-3)/4

= 5/4 = 1.25 m/ sec²

Answer 2

Answer:

The acceleration of the body is 1.25m/s².

Explanation:

We will use the first equation of motion to solve this question. Which is given as,

$v=u+at$             (1)

Where,

v=final velocity of the body

u=initial velocity of the body

a=acceleration with which the body is moving

t=time taken by the body

From the question we have,

u=3m/s

v=8m/s

t=4 sec

By substituting the value of u,v, and t in equation (1) we get;

$8=3+a\times 4$

$a=\frac{5}{4}$

$a=1.25m/s^2$

Hence, the acceleration of the body is 1.25m/s².