contact and non-contact forces

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16 Terms

1
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what is a vector quantity?

a quantity that has both magnitude and direction

2
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name three examples of vector quantities

force, velocity, acceleration

3
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what is a scalar quantity?

a quantity that has only magnitude and no direction

4
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name three examples of scalar quantities

speed, mass, temperature

5
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how are vectors usually represented?

by arrows, where the length shows the magnitude and the direction shows the direction of the quantity

6
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what is a force?

a push or pull on an object caused by its interaction with something

7
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what are the two types of forces?

contact forces and non-contact forces

8
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what is a contact force?

a force that requires objects to be touching

9
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give three examples of contact forces

friction, air resistance, tension in ropes

10
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what is a non-contact force?

a force that acts without objects needing to touch

11
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give three examples of non-contact forces

gravitational force, electrostatic force, magnetic force

12
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what is an interaction pair?

a pair of forces that are equal and opposite, acting on two interacting objects

13
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according to newton’s third law, what happens when two objects interact?

they exert equal and opposite forces on each other

14
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name one contact and one non-contact force acting on a tennis ball as it falls

contact force: air resistance; non-contact force: gravity

15
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give two examples of scalar quantities

mass, distance

16
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give two examples of vector quantities

force, velocity