EVERYDAY SCIENCE - FORCES

Question 2

Ace plays bowling regularly. One day during training, he measured the rolling speed of the ball to be 5 metres per second. He requested to change bowling lanes as his lane was not oiled. On the new lane, which was oiled, Ace was able to record a speed of 7 metres per second. Ace managed to knock down all the pins on the second lane.

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Answer 1

Fill in the blanks with the keywords provided below.
[gravitational] • [less] • [lubricant] • [motion] • [push] • [frictional] • [push]

a) What are the forces acting on the bowling pins at the exact moment when the ball hits them?

Answer:

The forces acting on the bowling pins are:
(i) force exerted by the bowling ball.
(ii) force exerted by the floor.
(iii) force between the floor and the pin.
(iv) force exerted by the earth.


b) Explain why Ace wanted to change lanes after being disappointed with the speed of the ball.

Answer: Friction will oppose the of the ball. Oil, being a , will reduce friction between the ball and the lane. The bowling ball will travel at a faster speed.


c) Ace has two different bowling balls (X and Y). Ball X has a mass of 5 kg while ball Y has a mass of 6 kg. If he throws both with the same force, which ball will move faster?

Answer: Ball will roll faster. Since Ace exerts the same force on both balls, the ball with mass will move faster.




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“Managing the friction between different objects is important in various sports. Watch this video to learn about how friction is used in the sport of curling.”