Focus On Physical Science: California Grade 8

Chapter 2: Forces

Math Practice

1.
What force is needed to accelerate a 1 kg book with an acceleration of 10 m/s2?
A)1 N
B)10 N
C)100 N
D)5 N
2.
A tow truck exerts a force of 6,000 N on a car, accelerating it at 4 m/s2. What is the mass of the car?
A)1500 kg
B)24,000 kg
C)3000 kg
D)2400 kg
3.
A car has a mass of 1000 kg and accelerates at 3 m/s2. What is the force acting on the car?
A)300 N
B)333 N
C)3000 N
D)30 N
4.
What force is needed to accelerate a 2 kg book with an acceleration of 2 m/s2?
A)8 N
B)1 N
C)2 N
D)4 N
5.
A car has a mass of 1500 kg and accelerates at 10 m/s2. What is the force acting on the car?
A)150 N
B)1500 N
C)15,000 N
D)15 N
6.
A boy pulls on a 30 kg sled with a force of 60 N. What is the sled’s acceleration?
A)1800 m/s2
B)180 m/s2
C)0.5 m/s2
D)2 m/s2
7.
A tow truck exerts a force of 4500 N on a car, accelerating it at 3 m/s2. What is the mass of the car?
A)4200 N
B)13,500 kg
C)1500 kg
D)150 N
8.
A man pushes a 30 kg box with a force of 210 N. What is the box’s acceleration?
A)630 m/s2
B)7 m/s2
C)6300 m/s2
D)0.14 m/s2
9.
A 3 kg box is pushed with an acceleration of 14 m/s2. What is the force applied to the box?
A)11 N
B)4.7 N
C)17 N
D)42 N
10.
A boat exerts a force of 7500 N on another boat, accelerating it at 3 m/s2. What is the mass of the second boat?
A)7200 kg
B)22500 kg
C)250 kg
D)2500 kg
Grade 8
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