StJ AQA Physics Yr10: Forces in Action Revision. Lesson 1

What is the difference between vector and scalar measurements?

• Scalar is measured in Newtons, vector is measured in Grams

• Scalar is magnitude, vector is direction

• Scalar is magnitude, vector is magnitude and direction

• Scalar is a bigger measurement than vector

What is the definition of distance?

• A scalar measurement of how much ground an object has covered during its motion

• A vector measurement in a straight line with reference to a specific point.

What is the definition of displacement?

• A vector measurement in a straight line with reference to a specific point

• A scalar measurement of how much ground an object has covered during its motion

What is the unit of force?

• Newton (n)

• Newton (N)

• Neutron (N)

True or False?

Resultant force is the difference between two opposite forces acting on an object or the total of forces acting in the same direction?

• True

• False

The arrows in this diagram represent the sizes of forces acting on a stationary tennis ball. What will happen to the tennis ball?

• It will stay still

• It will start to move upwards

• It will start to move downwards

Forces can be:

• Pulls only

• Pushes only

• Pulls and pushes

From your notes...

Calculate the resultant force for the horizontal forces.

(You have 2mins for this question)

• 12.5N to the east

• 2.25N to the north

• 11.5

• 11.5N to the east

From your notes...

Calculate the resultant force for the vertical forces.

(you have 2 mins to answer this question)

• 11.5N to the south

• 9.75N to the east

• 3.6269N to the north

• 3.6269N to the south

According to Newton's first law of motion, unless a resultant force acting on an object is above zero, a stationary object will...

• Stay stationary

• Move north only

• Move south only

• Will move slowly