EASY
Lower Secondary Stage 7
IMPORTANT
Earn 100

What would happen to the motion of objects moving in a straight line if there was no friction or air resistance? 

Important Questions on Forces and their Effects

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>Exercise 6>Q 2
You are in an aeroplane flying high up in the sky and you measure your weight. What result do you expect? Explain why.
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>Exercise 6>Q 3
Galileo's experiment only works with two dense objects. Explain why the result would be different if you dropped a hammer and a feather together.
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>Exercise 10>Q 2
 A bus with a weight of 400000 N crosses a bridge. What upwards force must the bridge structure be able to provide?
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>Exercise 10>Q 3

A ship takes on 600000 Kg of extra cargo. Explain why it sinks lower in the water.

EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>End of chapter review>Q 2
What forces act on a falling leaf?
EASY
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>End of chapter review>Q 3
Using g = 10 N/kg, calculate the weight of an object with a mass of 2 kg.
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>End of chapter review>Q 3
Using g = 10 N/kg, calculate the mass of an object which weighs 3000 N.
MEDIUM
Lower Secondary Stage 7
IMPORTANT
Cambridge Lower Secondary Science Stage 7 : Student's Book>Chapter 10 - Forces and their Effects>End of chapter review>Q 4
Explain why we lubricate machines with oil.