WorksheetsPhysics 1 Chapter 5-8 (Calculation)
Total questions: 20
Worksheet time: 2hrs 40mins
If you push a cart with a force of 60 N for 2 m... how much work have you done?
120 J
30 J
120 N
30 N
To calculate the elastic potential energy you must use the equation: Ee = 0.5 x spring constant x extension2. (Extension must be in metres, m) Calculate the elastic potential energy stored in a spring with a spring constant of 200 N/m that has been stretched from a length of 117 cm to a length of 127 cm.
0.1 J
1.0 J
10.0 J
100.0 J
To calculate the gravitational potential energy of an object you must use the equation: Ep = mass x gravitational field strength x height. Which of the following objects has the most gravitational potential energy?
A 3 kg mass, 5 m above the ground on Earth (g = 9.8 N/kg)
A 4 kg mass, 4 m above the ground on Venus (g = 8.9 N/kg)
A 10 kg mass, 5 m above the ground on Mars (g = 3.4 N/kg)
A 9 kg mass, 11 m above the ground on the Moon (g = 1.6 N/kg)
To calculate the kinetic energy of an object you must use this equation: Ek = 0.5 x mass x speed2. Which of the following objects has the most kinetic energy?
A 10 kg mass with a speed of 5 m/s.
A 5 kg mass with a speed of 10 m/s.
A 2 kg mass with a speed of 20 m/s.
A 0.1 kg mass with a speed of 100 m/s.
A toaster takes 200 s to transfer 180,000 J of energy. What is the power of the toaster?
90 W
900 W
9,000 W
90,000 W
What object has the most Momentum
20kg moving 2m/s
20kg moving 8m/s
20kg moving 10m/s
20kg moving 1m/s
A baseball bat applies a force of 20 N to a 0.1-kg ball that has initial speed of 4.5 m/s for 0.2 s. Find the final velocity of the ball after the hit.
25.5 m/s
14.5 m/s
4.45 m/s
44.5 m/s
1. A 0.75-kg mass travelling at 8.0 m/s collide with a 0.05-kg mass coming from the opposite direction with the same speed. If the collision is elastic, determine the speed of the 0.75-kg mass after the collision.
6 m/s
22 m/s
10 m/s
15 m/s
A 0.25-kg ball attached to a string rotating in a horizontal circle of radius 0.5 m. If the ball revolves twice every second, what is the tension of the spring?
2 N
5 N
10 N
20 N
During its trip, a car of mass 1500kg is traveling around a corner as shown in the picture. The car rounds a corner of a radius 100m at a speed of 15m/s. Find the coefficient of static friction.
0.15
0.02
0.23
23
What is the tension of a 0.2-kg yoyo spun at the top of a circle with a radius of 0.7 m at a velocity of 3 m/s?
1.10 N
0.61 N
3.05 N
2.50 N
Two trucks each has a mass of 3000 kg. The gravitational force between the trucks is
4.00 × 10-5 N. Find the distance between them.
(G = universal gravitation constant = 6.67 x 10-11 Nm2/kg2
3.87 m
0.07 m
15 m
5.6 m
A flywheel starts from rest, and has an angular acceleration of 4 rad/s2. What will be its angular speed when it has made 2 revolutions?
7.09 rad/s
6.35 rad/s
10.03 rad/s
5.01 rad/s
Starting from rest, a wheel reaches an angular speed of 23.5 rad/s in 0.7 s. What was its angular acceleration?
33.6 rad/s2
11.5 rad/s2
16.5 rad/s2
0.03 rad/s2
The belt of a conveyor wraps around a pulley of 4.0 cm diameter as shown. What is the net torque applied to the pulley?
-1.1 N.m CW
0.1 N.m ACW
- 0.1 N.m CW
1.1 N.m ACW
The belt of a conveyor wraps around a 8-kg pulley of 4.0 cm diameter as shown. What is its acceleration if its moment of inertia is 1.6x10-3 kg/m2.
- 687.5 rad/s2
1.45x10-3 rad/s2
- 204.67 rad/s2
458.34 rad/s2
