Unit Conversions
1D Kinematics
2D Kinematics
Forces
100
Convert 150 centimeters to meters.
1.5 meters
100
If a biker rides west for 50 miles from his starting position, then turns and bikes back east 80 miles. What is his net displacement?
30 miles east
100
A person walks 10.0 m north and then 2.00 m east.What is the magnitude of the displacement of this person?
10.2 meters
100
What is true about an object with a net force of zero?
It is not accelerating, a = 0
200
Convert 5.6 kilograms to grams.
5600 grams
200
Using the graph, what is the runner’s velocity from 4 to 10 s?
0 m/s
200
What is true about a projectile when the height of a projectile is at its maximum?
The velocity in the y direction is zero.
200
Three forces, A, B, and C, are acting on the same object with magnitudes a, b, and c, respectively. Force A acts to the right, force B acts to the left, and force C acts downward. What is a necessary condition for the object to move straight down?
Forces A and B must be equal in magnitude.
300
Convert 2.5 liters to milliliters.
2500 milliliters
300
What is the final velocity of a freight train that accelerates at a rate of 0.0500 m/s^2 for 8.00 min, starting with an initial velocity of 4.00 m/s?
28 m/s
300
A ball is thrown in the air at an angle of 40°. If the maximum height it reaches is 10 m, what must be its initial speed?
21.8 m/s
300
A car weighs 2,000 kg. It moves along a road by applying a force on the road with a parallel component of 560 N. There are two passengers in the car, each weighing 55 kg. If the magnitude of the drag experienced by the car is 45 N, what is the acceleration of the car?
0.24 m/s^2
400
A car is traveling at a speed of 90 kilometers per hour. Convert this speed to meters per second.
25 meters per second
400
Write a statement that
correctly describes the object’s speed, as well as what a graph of acceleration vs. time would look like?
The object is speeding up. The acceleration graph would a horizontal, positive line.
400
A large rock is ejected from a volcano with a speed of 30m/s and at an angle 60 degrees above the horizontal. The rock strikes the side of the volcano at an altitude of 10.0m lower than its starting point. Calculate the horizontal displacement of the rock.
85.1 meters
400
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. What is the acceleration of the child in the wagon?
0.13 m/s^2