Question

20. Ifa trolley starts from rest with an acceleration of 2
m/s, the velocity of the body after 4s would be:
1) 2 m/s
2) 8 m/s
3) 4 m/s
4) 6 m/s​

Answer 1

Answer:

the answer is (2) 8 m/s

Explanation:

therefore, u=0, a=2 m/s^2, t=4 s

therefore, v= u + at

therefore, v= 0 + 2*4

therefore, v= 8 m/s

therefore (2) is the correct option.

Answer 2

Answer:

8 m/s

Explanation:

Given :

• Initial velocity = u = 0 m/s
• Acceleration = a = 2 m/s²
• Time = t = 4 seconds

To find :

• Final velocity of the trolley

Using the first equation of motion:

V=u+at

V=0+2×4

V=0+8

V=8 m/s

The trolley starting from rest with an acceleration of 2 m/s² for 4 seconds will attain a velocity 8 m/s