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Identifying Forces Around Us

Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

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Page 1: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Identifying Forces Around Us

Page 2: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Force

• A force is simply defined as a push or a pull

• Forces cannot be seen

• We do see or feel their effects however

Page 3: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Can you identify the forces at work in this situation ?

• Millie opened the fridge and brought out a chilled can of soda. She slammed it, opened the soda and gulped it down. She was upset it was finished too soon and so she crushed the can in her hand and threw the empty can into the bin."

Page 4: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

How do we measure a force?

Page 5: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 6: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

What can a force do ?

Page 7: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 8: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 9: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 10: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 11: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

A force can speed up a moving object.

Page 12: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Types of forces

• Weight • Gravity • Friction• Air resistance• Water resistance

Page 13: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Who Am I ?

Page 14: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 15: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Why don’t we fall of the earth?

Page 16: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 17: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

A million dollar question?

Are mass and weight one and the same?

Page 18: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however
Page 19: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Relationship Between Mass & Weight

Weight = Mass× Gravity

or W=mg

Page 20: Identifying Forces Around Us. Force A force is simply defined as a push or a pull Forces cannot be seen We do see or feel their effects however

Answer me !• Aleena has a mass of 56 kg. her weight on

earth should bea. 5.6 Nb. 560kgc. 560 Nd. 560 g