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Q:

If a ball is thrown vertically upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 s?

A) 80 m B) 40 m
C) 60 m D) 20 m
 
Answer & Explanation Answer: C) 60 m

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Q:

If a ball is thrown vertically upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 s?

A) 80 m B) 40 m
C) 60 m D) 20 m
 
Answer & Explanation Answer: C) 60 m

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Q:

When an object is thrown vertically upwards, at its maximum height its _____________.

 

A) potential energy is zero B) momentum is maximum
C) kinetic energy is zero D) gravitational force is maximum
 
Answer & Explanation Answer: C) kinetic energy is zero

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Q:

A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)

A) 35 m B) 25 m
C) 45 m D) 125 m
 
Answer & Explanation Answer: A) 35 m

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Q:

Which of the following Newton's laws of motion can explain why a ball thrown at a wall rebounds?

A) 1st law of motion B) 2nd law of motion
C) 3rd law of motion D) Neither of the laws
 
Answer & Explanation Answer: C) 3rd law of motion

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Q:

I am a ball that can be rolled, but never bounced or thrown. What am I?

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Q:

A particle is thrown vertically upward. When it reaches the highest point, it has ____________

A) a downward acceleration B) an upward acceleration
C) a downward velocity D) a horizontal velocity
 
Answer & Explanation Answer: A) a downward acceleration

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Q:

If a ball is thrown up, which of the following does not change?

A) Acceleration B) Speed
C) Potential energy D) Distance
 
Answer & Explanation Answer: A) Acceleration

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