A) Mass B) Weight C) Speed D) Acceleration 7. A ball is thrown vertically into the air. Due to the air resistance, the s

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A) Mass B) Weight C) Speed D) Acceleration
7. A ball is thrown vertically into the air. Due to the air
resistance, the speed when it returns to its starting level
compared to its initial speed is
A) More B) Less C) The same D) None of the above
8. A 3 kg ball has a momentum of 12 kg m/s. What is ball’s
speed?
A) 3 m/s B) 4 m/s C) 12 m/s D) 48 m/s
9. An object is placed exactly halfway between the earth and
moon. The object will fall toward the
A) Earth B) Moon C) Both of them D) Neither of them
10. A 1-kg ball dropped from a height of 2m rebounds only 1.5m
after hitting the ground. The amount of energy converted into loss
is about
A) Less than 2.0 J B) 3.0 – 3.5 J C) 4.0 – 4.5 J D) More than
4.5 J