Physicsmedium · Past Paper
The displacement 's' of a particle at time 't' is given by s = 4t^2. The acceleration is:
A4 units
B8 units
C16 units
D2 units
✓ Correct Answer: B — 8 units
Comparing with s = 0.5at^2, we get 0.5a = 4, so a = 8.
Share this question
More from Physics
- A cell of EMF 2V and internal resistance 0.5 Ohm is connected to an external resistance of 9.5 Ohms. What is the terminal potential difference?
- A stone dropped from the top of a cliff strikes the ground in 4 seconds. How much more time will it take to strike if the cliff was 4 times as high?
- What is the weight of a 50 kg body in a lift falling freely?
- A bullet of mass 10g is fired with a velocity of 400 m/s. What is its KE?
- If a body of mass m starts falling from point A at height h, what is its velocity at point B which is at height h/2?