JEE 2020 Revision Quiz :Kinematics- 1

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Question 1

A golf ball is hit by a club at 30ᵒto the horizontal with a kinetic energy E. What will be the kinetic energy at the highest point?

• A3E/4
• BE/2
• C0
• DE

Question 2

A stone is thrown by a person with an initial speed of 10 ms^-1 as shown in figure. It reaches its maximum height at point Q, 4 m higher than its starting point. What will be the angle of projecion?

• A50ᵒ
• B62.3ᵒ
• C85ᵒ
• D45ᵒ

Question 3

An aeroplane is flying with a horizontal velocity u and height h. It drops a food packet to ground. What will be the velocity of packet dropped from it on the ground?

• A√2hg
• B2gh
• C√u² – 2gh
• D√u² + 2gh

Question 4

A truck travelling due to North at 20m/s turns east and travels at the same speed. The change in its velocity is –

• A20 √2m/s North East
• B20√2m/s South East
• C40 √2m/s North East
• D20√2m/s North West

Question 5

A stone is dropped from the top of the tower and travels 24.5m in the last second of its journey. The height of the tower is -

• A44.1m
• B49m
• C78.4m
• D72m

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