Question

40. Observe the force-time graph and answer the
following questions
a. How many times does the force change?
b. Is the body moving with uniform
acceleration?​

Answer 1

Answer:

From the kinematic expression.

v=u+at

here, the final velocity is v, the initial velocity is u, the acceleration is a, and the time is t.

if the initial velocity is zero then, u=0

so, the expression becomes.

v=at

now compare the above expression with the equation of a line i.e. y=mx+c so, this is the expression of straight line with slope a.

hence, the curve will be a straight line with slope a.

hence, the correct option is (B).