cp7 chap2 retest

Write down 3 example of contact forces

Draw the arrow of gravitational force that act on Mr Lek Heng.

Write down the force that will be affected by gravity.

A car weight 15,000N on Earth

What is the mass of the car on Earth?

• 15kg

• 1500kg

• 15000kg

• 150000kg

Which shape below will experience the less air resistance?

• 
• 
• 
• 

What is the uses of streamlining?

• To reduce air resistance

• To reduce water resistance

• To reduce friction

• To fly

Which of the following force can cause centripetal force?

i. gravity

ii. electrostatic force

iii. magnetic force

iv. tension

• i,ii

• iii,iv

• i,iv

• ii,iii

What is centripetal force?

• A force that pulls object with mass down

• A force that keeps object moving in a circle

• A force when object move in front

• A force when object moving up

Shout "I FORGOT TO BATH YESTERDAY' loudly for extra mark (first 3 person only)