KEAM Practice Quiz

Question 1

A force of 20 N acts on a body of mass 5 kg initially at rest on a smooth horizontal surface for 4 s. What is the speed of the body after 4 s?

Accepted Answer

16 m/s

Question 2

A book rests on a table. Which statement is correct about the action-reaction pair associated with the book’s weight?

Accepted Answer

The Earth pulls the book downward, and the book pulls the Earth upward with equal force

Question 3

Two masses 3 kg and 2 kg are connected by a light string over a smooth pulley. Taking g = 10 m/s², what is the acceleration of the system?

Accepted Answer

2 m/s²

Question 4

A 4 kg block and a 6 kg block are in contact on a smooth horizontal surface. A horizontal force of 30 N is applied to the 4 kg block, pushing both together. What is the contact force between the two blocks?

Accepted Answer

18 N

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