Question

The distance travelled by a body is directly proportional to the time taken. Its speed.

• A. increases
• B. decreases
• C. becomes zero
• D. remains constant

Answer 1

The correct option is D

remains constant

Correct option is D:remains constant

Explanation:

1. By the second equation of motion, $\mathrm{s}=\mathrm{ut}+\frac{1}{2}{\mathrm{at}}^2$
2. Only when there is no acceleration, S is it exactly proportional to time.
3. The object's acceleration 'a becomes zero in the absence of external force, and the equation of motion becomes s= ut.
4. Because the object's speed 'u' remains constant because its acceleration is zero.