Question

The trajectory of an object is defined as x = (t-4)^2, what is the velocity at t = 5?

(a) 2

(b) 5

(c) 1

(d) 4

I have been asked this question during an online interview.

I need to ask this question from Straight Line Motion topic in portion Motion in a Straight Line of Physics – Class 11

Answer 1

Right answer is (a) 2

To elaborate: The function for velocity can be derived by differentiating the equation with respect to t. v = 2(t-4) is the required function. When t = 5, v = 2(5-4) = 2.