Question

14 Assertion(A):Force is not required to move a body uniformly along a straight line
Reason(R): Force provides acceleration alone
a) If both (A) & (R) are true and R is the correct explanation of A
b) If both (A) & (R) are true but R is not the correct explanation of A
c) If (A) is true but (R) is false
d) If (A) is false but (R) is true​

Answer 1

Answer:

(D) If (A) is false but (R) is true

Explanation:

Since even when the body remains in the rest it exerts a force calling normal force. So, for getting in to the uniform motion along a straight line force is required , but for uniform motion velocity remains constant.

FORCE = MASS x ACCELERATION

Force is the function of mass and acceleration but mass remains conserved so, force provides acceleration for getting into the motion.

So, option (D) is correct.

Answer 2

option d is the correct answer