Question

The acceleration of a body is 3 ms⁻². This means that the velocity changes in every two seconds by
a) 2 ms⁻¹b) 3 ms⁻¹c) 6 ms⁻¹d) 9 ms⁻¹

Answer 1

The Answer is c) 6m/s^2
The acceleration of a body is 3 m/s^2
The change in velocity of a body in 2 sec is 6m/s^2
(acceleration is change in velocity)

Answer 2

b) 3 ms⁻¹.

Constant Velocity

1. s = vt

Constant Acceleration

2. v = u + at

3. s = ut + ½ at^2

4. Average velocity = [v + u]/t

5. v^2 = u^2 + 2as

Acceleration = 10 m/s^2

Time = 2 seconds

Unknown: distance

Formula: distance = (acceleration x time^2)(0.5)

solution:

distance = (10m/s^2) x (2 seconds)^2 x 0.5

distance= 20 meters