Motion
What is 6.67 sec
The engine of a rocket can supply 1,000 N of force, accelerating it upward at a rate of 60 m/s2 for 10 seconds before running out of fuel. What is the mass of the rocket?
What is 16.67 kg
What is the weight of an astronaut in outer space that has a mass of 100 kg?
0 N
If you decrease the distance of two charges by 4 times, what would happen to the force between the two charges?
What is increase by 16 times
Balanced forces means an object can be doing what?
At rest or moving at a constant speed
A football is kicked straight up into the air at a speed of 30 m/s. How high does the ball go? (Assume no air resistance.)
What is 45 m
If the acceleration of an object decreases, but the force stayed constant, what happened to the mass?
What is increased
Neil Armstrong goes to a new planet and finds he has a weight of 50 N! If his mass is 75 kg, what is the acceleration due to gravity?
What is .67 m/s^2
What is the theory of general relativity?
What is that objects with mass bend the fabric of space-time.
Unbalanced forces means an object can be what?
Speeding up, slowing down, or changing direction
In coming to a stop, a car leaves skid marks 40 m long on the road. If he is accelerating at -6 m/s2, what is the speed of the car right before breaking?
What is 21.9 m/s
A 1,000 kg car is driving at 10 m/s and covers a distance of 100 meters in 5 seconds. What is the force the engine supplies during this time?
What is 4,000 N
Two students are sitting across the classroom. If they both have a mass of 50 kg and are 5 meters apart, what is the gravitational attraction between them?
6.67 x 10^-9
A plane is flying 6.38x10^6 m from the center of the earth (m = 5.97x10^24 kg). What is the mass of the plane if it is experiencing a downward gravitational force of 1.66x10^5 N of force?
What is 16,968 kg
What are Newton's 3 laws? What is an example of each?
2) F = ma
3) For every action there is an equal and opposite reaction
What is the velocity of a chihuahua after it has fallen freely from rest through a distance of 60 m?
What is 34.6 m/s
A 50 kg sprinter starts from rest, and applies a force of 800 N to the blocks at a 20 degree angle. What is the acceleration of the sprinter?
What is 15.04 m/s
A 33 kg box is sitting on a ramp that is at a 70 degree incline. What is the frictional force acting on the box?
Two spherical objects have masses of 1.5 x 105 kg and 8.5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.
1.4 x 10^-11 N
A pulley has a 15 kg mass on one side and a 3 kg mass on the other side. How fast is the pulley accelerating?
6.53 m/s2
Moops drives at 20 m/s and accelerates at a rate of 6 m/s2 over a distance of 100 m. How long will this take?
What is 3.33 sec
A man is pushing a box with a force of 90 N at an angle of 50 degrees. What is the normal force of the box if it has a mass of 10 kg?
What is 156 N
A 500 kg roller coaster is going down a hill. If the incline is at 80 degrees and the hill is a 127 m long, what is the final velocity of the roller coaster at the bottom of the hill?
49.5 m/s
Two spherical objects have masses of 6.3 x 103 kg and 3.5 x 104 kg. The gravitational attraction between them is 6.5 x 10-3 N. How far apart are their centers?
1.5 meters
A rope is holding a 20 kg chandelier in an elevator. The rope can hold a total force of 500 N, so how fast can the elevator accelerate without breaking the rope?
15.2 m/s2