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Newton's Laws And Energy
Test Description: Review of Newton's laws of motion and Potential and Kinetic Energy
Instructions: Answer all questions to get your test result.
1) What force would a 10 kg bowling ball need to accelerate it down an alley at 2.5 m/s2?
A
4 Newtons
B
4 Pounds
C
2.5 Newtons
D
25 Newtons
2) A 2,000 kg car hits a guard rail with 500 Newtons of force. What is the force of the guard rail on the car?
A
500 Newtons
B
500 pounds
C
10,000 Newtons
D
400 Newtons
3) A dead squirrel fell out of a tree, what are the forces acting on him when he is in the air?
A
Air resistance and the normal force
B
The force of gravity and the normal force
C
Air resistance and the force of gravity
D
Force of gravity and the applied force
4) The bus driver is driving the 10,000 kg bus at a constant speed of 20 mph. What is the sum of the forces on the bus?
A
0 N
B
200,000 N
C
20,000 N
D
There is not enough information to solve this problem.
5) A 1100 kg car is driving at 100 m/s. Is the energy potential or kinetic and how much?
A
Potential, 110,000 J
B
Kinetic, 110,000 J
C
Kinetic, 5,500,000 J
D
Potential, 5,500,000 J
6) What is the potential energy of a cell phone, 0.05 kg, that is 1.5 meters above the floor?
A
0.075 J
B
0.735 J
C
120 J
D
30 J
7) If there are 3 waves traveling in 6 seconds, what is the frequency of the wave?
A
3 Hz
B
18 Hz
C
0.5 Hz
D
You need the wavelength to find the frequency
8) What is the speed of a wave that has a wave length of 12 cm and a frequency of 3 Hz
A
36 cm/s
B
36 Hz
C
4 cm
D
4 cm/s
9) A 60 kg man is accelerating towards earth with a parachute at 4 m/s2. What is the force that he will hit the Earth?
A
0 N
B
15 N
C
240 Newtons
D
60 kg
10) Two teams are playing tug of war. One team pulls 200 N to the left, the other pulls 250 to the right. What is the sum of the forces?
A
50 N to the left
B
450 N total force
C
50 N to the right
D
250 to the right
*select an answer for all questions
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