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Chapter 12 Review 2

Test Description: Newton's Laws

Instructions: Answer all questions to get your test result.

1) An orange might roll off your cafeteria tray when you stop suddenly because of

Athe friction forces acting on the orange Bthe centripetal force acting on the orange Cthe balanced forces acting on the orange Dthe orange's inertia

2) According to Newton's 2nd Law, the acceleration of an object equals the net force acting on the object divided by the object's

Aweight Bmass Cmomentum Dvelocity

3) If a force of 18N is applied to an object with a mass of 1 kg, the object will accelerate at

A17 m/s2 B0.06 m/s2 C18 m/s2 D19 m/s2

4) Your weight equals your

Amass divided by the net force acting on you Bmass times the acceleration due to gravity Cmass Dmass times your speed

5) The acceleration due to gravity on the surface of Mars is about 1/3 the acceleration due to gravity on Earth's surface. The weight of a space probe on the surface of Mars is about

Aone third its weight on Earth's surface Bthree times greater than its weight on Earth's surface Cthe same as its weight on Earth's surface Dnine times greater than its weight on Earth's surface

6) Newton's third law of motion describes

Anet force Bcentripetal forces Cbalanced forces Daction and reaction forces

7) In which of the following are action and reaction forces involved?

Awhen stepping from a curb Bwhen a tennis racket strikes a tennis ball Call of the above Dwhen rowing a boat

8) The product of an object's mass and velocity is its

Aweight Bnet force Ccentripetal force Dmomentum

9) What is conserved when two objects collide in a closed system?

Aspeed Bvelocity Cmomentum Dacceleration

10) An astronaut travels far away from Earth, her weight

Adecreases because her mass decreases Bremains the same because her mass remains the same Cincreases because gravity increases Ddecreases because gravity decreases

*select an answer for all questions

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