Physics - Study Mode

[#276] The motion of a freely falling body is an example of ________ motion.
Correct Answer

(A) Uniformly accelerated

Explanation

Solution: The motion of a freely falling body is an example of uniformly accelerated motion. The motion of the body where the acceleration is constant is known as uniformly accelerated motion.

[#277] If velocity is constant then acceleration is what?
Correct Answer

(C) Zero

Explanation

Solution: Acceleration is defined as the change in velocity over time. Since in this case there is no change, there is no acceleration, so it is zero.

[#278] Acceleration is the rate of change of
Correct Answer

(B) Velocity

Explanation

Solution: Acceleration is the rate of change of velocity.

[#279] Rate at which velocity changes over time?
Correct Answer

(C) Acceleration

Explanation

Solution: Rate at which velocity changes over time is called acceleration.

[#280] Who is the first person to define speed
Correct Answer

(A) Galileo

Explanation

Solution: The Italian physicist Galileo Galilei is credited with being the first to measure speed by considering the distance covered and the time it takes. Galileo defined speed as the distance covered per unit of time.