Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body

ZIKKO77

4 months ago

The correct answer is:
C. will increase with time in the direction of the acceleration
When a body moves in a straight line with uniform acceleration, it means:
The acceleration is constant
The velocity changes at a constant rate
From the equation of motion:
Velocity changes with time.
If acceleration is positive, velocity increases steadily in that direction.
Why the other options are wrong:
A. is also uniform
Wrong. Uniform velocity means no acceleration. Here, velocity is changing.
B. must always be zero when the body stops accelerating
Wrong. A body can stop accelerating and still have velocity (e.g., moving at constant speed).
D. is equal to the quotient of distance travelled and time
That defines average velocity, not instantaneous velocity in uniformly accelerated motion.
E. is the product of the distance travelled and time
Physically incorrect. Velocity is not distance × time.

Einsteinbrains

7 years ago

the answer is wrong. for a body to have constant acceleration, it must have uniform velocity