Question

A car moving with uniform acceleration and changes its velocity from 10 m/s to 50 m/s in 4 seconds then,. Find out the acceleration of car?? Find out the displacement in this time???​

Answer 1

Answer:

check the attachment for answer

Answer 2

Given:

A car moving with uniform acceleration and changes its velocity from 10 m/s to 50 m/s in 4 seconds.

To find:

• Acceleration
• Displacement

Calculation:

Applying EQUATIONS OF KINEMATICS:

$\therefore \: v = u + at$

$\implies \: 50 = 10 + a(4)$

$\implies \: 4a = 40$

$\implies \: a = 10 \: m {s}^{ - 2}$

So, acceleration is 10 m/s².

$\therefore \: {v}^{2} = {u}^{2} + 2as$

$\implies \: {50}^{2} = {10}^{2} + 2(10)s$

$\implies \: 2500 = 100 + 20s$

$\implies \: 20s = 2400$

$\implies \: s = 120 \: metres$

So, displacement is 120 metres.