Question

. The greatest value of acceleration is
possessed by which of the following
bodies?
W A plane accelerating at 5 m/s
(b) A person accelerating at 5 km/h?
(c) A car accelerating at 5 m/min?
(d) All have equal acceleration.​

Answer 1

Given: A plane accelerating at 5 m/s, a person accelerating at 5 km/h, and a car accelerating at 5 m/min.

To find: Body by which the greatest value of acceleration is possessed.

Solution:

• Acceleration is the change in velocity with respect to time.
• In order to find the answer, the velocity of all the bodies must first be converted to the same unit.
• The velocity of the plane is given as 5 ms⁻¹.

• The velocity of the person is given as 5 kmh⁻¹, that is, 1.39 ms⁻¹.

• The velocity of the car is given as 5 m min⁻¹, that is, 0.14 ms⁻¹.
• The velocity of the plane is the greatest of the three.

Therefore, the greatest value of acceleration is possessed by the plane.

Answer 2

Answer:

The correct answer is (a) A plane accelerating at 5 m/s.

Hope it helps you :)