Question

The velocity time graph of a body is shown. It implies that at B: V A A) Fis zero 3) Fis towards motion The angle between F and a is always: ✓ B t C) F opposes motion D) None of these​

Answer 1

It implies that Force opposes motion. Option C

First, we need to remember that;

a = dv/dt

Such that;

• a is acceleration
• dv is the change in velocity
• dt is the change in time

Then, we have that;

After point B, A would be negative since the value of dv/dt is negative.

Since, Force = mass ×acceleration

If a = negative, then force would also be negative, that is, force is experienced in opposite direction of motion.