Question

A mass has constant acceleration, what is true about the force applied to it?
a) constantly increasing
b) constant but not zero
c) is directly proportional to square of displacement
d) is directly proportional to velocity

Answer 1

Answer:

Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate.   In this case, it will have constant acceleration

F = ma

So answer b) is correct.

Answer 2

Force will be constant but not zero.

• From Newton's 2nd Law of Motion, we know that : the force exerted on an object is the product of mass and acceleration of the object.

Mathematically , we can say:

$\boxed{ \sf \: force = mass \times acceleration}$

• Now, in an object (having constant mass) moving with constant acceleration, the force is bound to non-zero and constant.

• However, velocity will change and will be constantly increase or decrease depending on the direction of the acceleration.

Hope It Helps.