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• # IMAT 2016 Q59 Physics and Mathematics

Ben Naz updated 1 month, 1 week ago 2 Members · 2 Posts
• ### Nicolas Sanchez

June 22, 2021 at 8:02 am
1023 Replies
201950 XP
Contributions: EnterMedSchool Donor Team Manager Volunteer
Reputation: Level 7

A ball is projected vertically upwards and then falls back to its original position.
Once projected, the ball experiences only a single force, downwards, due to a constant gravitational field strength of 10 N/kg.
Here are three statements about the ball:
1 When the ball is moving upwards it loses kinetic energy and gains potential energy.
2 The magnitude of the ball’s acceleration increases as it falls.
3 No vertical forces act on the ball when it is at its maximum height.
Which of the statement(s) is/are correct?

A. 2 and 3 only

B. none of them

C. 1 and 2 only

D. 3 only

E. 1 only

• ### Ben Naz

Member
August 5, 2021 at 3:15 pm
6 Replies
63500 XP
Reputation: Level 6

As a ball goes up it gains gravitational potential energy but slows down and therefore
loses kinetic energy. However, the acceleration of the ball as it goes down is constant.
At the balls maximum height there are vertical forces acting on the ball, which cause it
to move downwards. Therefore E is the correct answer.

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