combining forces

• Science
• Secondary Education

Combining forces 

Grade-8

may 28,2020

INSTRUCTIONS 

Keep camera and mics mute

submit your attendance in forms

Maintain online decorum 

RECALL

A push or pull is called a force

The unit for force is Newtons N

Balanced and unbalanced forces 

The sum of the forces acting on an object is called the net force.

if the net force is zero, and the object is not in motion then it is balanced motion

If the net force acting on a object is not 0, the forces acting on a object are unbalanced

Which could be the net force acting on an object when the forces are balanced?

1. -10 N
2. O N
3. 2 N
4. 10 N

Which type of force(s) will cause a change in an object's motion?

1. friction
2. zero net force
3. balanced forces
4. unbalanced forces

What is the net force acting in the given image ?

1. 22 N right
2. 2 N right
3. 2N left
4. 22 N left

What is the net force acting on the couch?

1. 25 N to the right
2. 20 N to the right
3. 45 N to the right
4. 5 N to the left

What is the net force acting on the football?

1. 125 N
2. 200 N
3. 75 N
4. 50 N

What is the net force on this box?

1. 10 N to the right
2. 90 N to the left
3. 10 N to the left
4. 290 N to the left

Name any three things you learnt today