Calculating Forces
Speed, Velocity, or Acceletation
Newton's Laws
Kinetic or Potential
Energy Transformations
100
F 1.3 m/s2
100
G. Velocity has a direction associated with it, while speed has no specific direction.
100
F. The aerialist's feet and the rope.
100
J. The two airplanes have the same kinetic energy but different gravitational potential energies.
100
A
200
B. The forces are balanced so no motion occurs.
200
C. 30 m/s east
200
H. The forces acting on the rock are all balanced.
200
A. Location W
200
C
300
The net force on a vehicle that is accelerating at a rate of 1.5 m/s2 is 1,800 newtons. What is the MASS of the vehicle to the nearest kilogram?
1200 kg
300
H. The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.
300
D. The reaction force is the force of the ball on the bat.
300
C. Location Y
300
F
400
G. -1,300 N
400
F. It's velocity was 7.8 km/s northward.
400
F. The wall pushes on the skater when the skater pushes on the wall.
400
G. The ball has more kinetic energy at position Y than at position W.
400
H. Mechanical to electrical
500
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
18 m/s2
500
F. The vehicle was traveling at a constant speed.
500
H. Because of inertia, the ball continues rolling forward at the same speed.
500
C. The cart loses kinetic energy and gains potential energy.
500
H. Chemical to electrical to mechanical