Motion
Vectors & 2D Motion
Dynamics
Gravity & Circular Motion
Work & Energy
Waves & Sound
100
How much time, in seconds, is required for an object travelling at 50 m/s to travel a distance of 6.0 km?
1.2 x 102 s
100
A car is driven 80 km north, then 50 km east, then 30 km south and then 90 km west. The entire trip required 4.5 hours. What was the displacement of the car?
64 km [51o N of W]
100
A ball with a mass of 1.56 kg is initially at rest on a frictionless surface. Calculate the acceleration of the ball if a 0.45 N horizontal force is applied for 0.25 s.
0.29m/s2
100
Calculate the centripetal force acting on a 2.5 kg object whirling at a speed of 3.5 m/s in a horizontal circle of radius 0.80 m.
38.3 N
100
A workman exerts a horizontal force of 30.0 N to push a 12.0 kg table 4.00 m across a level floor at constant speed. Calculate the work done.
120J
100
A wave series with a wavelength of 10 m has a speed of 300 m/s. What is the frequency of the waves?
30 Hz
200
An object travels east for 500 m at a speed of 25 m/s and then west for 800 m at 16 m/s. What was the final displacement of the object?
300 m [West]
200
An object travels 500 m south, 480 m east, 350 m north, 1650 m west, 390 m north, 590 m east, and 190 m north. The entire trip required 3 hours and 21 minutes.
What was the resulting displacement of the object?
722 m [53o W of N]
200
If a 130 N east net force is applied for 2.0 seconds to a 50 kg mass at rest, what is the resulting displacement of the object?
5.2m [East]
200
An object is swung in a vertical circle with a radius of 0.85 m. What is the minimum speed of the object so that it remains in circular motion?
2.89 m/s
200
A 50.0 kg crate is being dragged across a floor by a force of 200 N at an angle of 40o from the horizontal. The crate is dragged a distance of 5.00 m and the frictional force is 60.0 N. What is the net work done on the crate?
466 J
200
Radio telescopes receive waves from distant stars. If such a wave has a wavelength of 21 cm and travels at the speed of light (c = 3.00 x 108 m/s), what is the frequency?
1.43 x 109 Hz
300
Given the following position-time graph, What is the velocity of the object at 5 s and at 15 s?
v5 = +0.38 m/s and v15 = +0.38 m/s
300
A pilot heads her plane with a velocity of 255 km/h north. If there is a strong 112 km/h wind blowing east, what is the velocity of the plane in reference to the ground?
279 km/h [23.7o E of N]
300
Three strings are attached to an object. If one of the strings is pulled north with a force of 10 N and one of the other strings is pulled west with 15 N, what force must be applied to the third string so that the object does not move?
18.0 N [33.7o S of E]
300
You are riding your bike on a track that forms a vertical circular loop. If the diameter of the loop is 7.0 m, how fast would you have to be travelling when you reached the top of the loop so that you would not fall?
5.86 m/s
300
A 50 N force stretches a spring by 0.75 m. What is the spring constant and how much energy is stored in the spring?
k = 67 N/m
Ep = 19 J
300
If the wavelength of a wave is quadrupled and the speed is quartered, what happens to the frequency?
Decreased by 16 times
400
A ball is thrown vertically upward from a window at 10m/s. It hits the ground 5.0 s later. What is the height of the window from the ground?
73 m
400
A man standing at the edge of a cliff throws a stone horizontally at 40 m/s. The stone lands 360 m from the base of the cliff. How high is the cliff?
397 m
400
A 30 kg object is on an inclined plane set at 40° to the horizontal. What is the acceleration experienced by the object if the coefficient of friction is 0.25?
4.43 m/s2 [DOWN]
400
A woman standing on the surface of the Earth,
6.38 x 106 m from its centre, has a mass of 50.0 kg. If the mass of the Earth is 5.98 x 1024 kg, what is the force of gravity on the woman?
4.9 x 102 N
400
A roller coaster is shown in the
drawing. Assuming no friction,
calculate the speed at points B, C,
D, assuming it has a speed of 1.80
m/s at point A.
B: 24.3 m/s
C: 10.1 m/s
D: 18.9 m/s
400
Explain why sound moves faster through solids than gases, and why the speed of sound is faster at higher temperatures
Sound is a vibrational wave and moves faster through denser materials, temperature directly related to kinetic energy
500
A car accelerates uniformly from rest at the rate of 2.0 m/s2 for 6.0 s. It then maintains a constant speed for 0.50 min. Finally, the brakes are applied and the vehicle slows down at a uniform rate and comes to rest in 5.0 s. Find
(a) the maximum speed of the car
(b) the total displacement.
(a)12 m/s
(b)4.3 x 102 m
500
A baseball is thrown at 30o above the horizontal with a speed of 49.0 m/s.
How much time is the baseball in the air?
5.00 s
500
In the diagram, mass A is 5.0 kg and mass B is 7.0 kg. What is the acceleration of the 5.0 kg mass and what is the tension in the rope?
Acceleration: 1.64 m/s2
Tension: 57.2 N
500
An artificial satellite in orbit around the Earth has a speed of 7.6 x 103 m/s. How far
above the Earth’s surface is the satellite orbiting?
5.3 x 105 m
500
One of the fastest roller coasters (2000 kg) in the world is the Magnum XL - 200 at Cedar Point Park in Sandusky, Ohio. This ride includes an initial vertical drop of 59.3 m. Assume that the roller coaster has a speed of nearly zero as it crests the top of the hill.
If the track was frictionless, find the speed of the roller coaster at the bottom of the hill.
34.1 m/s
500
A standing wave pattern completes 4 oscillations in 2.50 s. If the nodal distance is 0.250 m, what is the speed of the wave?
0.80 m/s