I like the way you "move"
Dynamics/Statics w/ 1 object
Dynamics/Statics w/ 2 objects
Space...the final frontier
You better work!
100
A hunter aims directly at a target (on the same level) 65.0 m away. The angle the gun is aimed so the target will be hit is
What is 0.868 degrees?
100
A force F is acting on an object of mass m to give it an acceleration of a. This happens to a, if m is halved and F is quadrupled.
What is multiplied by eight?
100
A block with a mass of 4.0 kg sitting on a frictionless horizontal table is connected to a hanging block of mass 6.0 kg by a string that passes over a pulley. Assuming that friction, the mass of the string, and the mass of the pulley are negligible, this is the rate at which the blocks accelerate.
What is 5.89 m/s^2?
100
The Moon has a radius of 1.7 × 106 m and a mass of 7.3 × 1022 kg. The gravitational field on the surface of the Moon is
What is 1.685 m/s^2?
100
This is the amount of work the force of gravity does in pulling a 10 kg box down a 30º inclined plane of length 8.0 m? Note that sin 30 = cos 60 = 0.500 and cos 30 = sin 60 = 0.866.
What is 392.4 J?
200
A ball is thrown directly upwards with twice the initial speed of another, the ball will this much higher at its apex.
What is 4 times higher?
200
A force pushes on an object of mass 10 kg with a force of 5 N to the right. Another force pushes on the same object with a force of 15 N to the left. This is the acceleration of the object.
What is 1 m/s^2 to the left?
200
Two masses, m and M, are connected by an ideal (massless) rope over an ideal pulley (massless and frictionless). This is the acceleration of the larger mass, in terms of m, M, and g.
What is a = (g(M-m))/(M+m)?
200
Given Newton's universal law of gravitation, these two circumstances make the force due to gravity bigger.
What is decrease the distance (radius) and/or increase the masses?
200
A car’s speed doubles, this happens to its kinetic energy.
What is it quadruples?
300
Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 falls
What is 4 times as far?
300
A 50 kg crate rests on the floor. The coefficient of static friction is 0.5. This is the force parallel to the floor needed to move the crate.
What is 245.25 N?
300
A system with a 2 kg block (on the left) attached to a 5 kg block with a rope (on the right, rope T2), is accelerated by applying a tension to a rope attached to the right of the 5 kg block (T1). Assuming the system is frictionless, this is the tension in the rope between the blocks, T2.
What is 2T1/7?
300
Your weight increases by this factor if you could stand on the Sun. (Never mind that you cannot.)
What is 3.33 X 10^5?
300
A forklift lifting a crate of mass 100 kg at a constant velocity to a height of 8 m over a time of 4 s. The forklift then holds the crate in place for 20 s. This is how much power the forklift exerts in holding the crate in place.
What is 0 W?
400
The velocity of a projectile at launch has a horizontal component vh and a vertical component vv. Air resistance is negligible. When the projectile is at the highest point of its trajectory, the vertical and horizontal components of its velocity and the vertical component of its acceleration are
What is the velocity will have a 0 vertical and horizontal component and the acceleration's vertical component will be gravity?
400
An object of mass m rests on a plane inclined at an angle of theta. This is an expression for the maximum value for the coefficient of static friction at which the object will slide down the incline.
What is sin(theta)/cos(theta) or tan(theta)?
400
Jane rides a sled down a slope of angle θ at constant speed v. This is the coefficient of kinetic friction between the sled and the slope. (Neglect air resistance.)
What is tan (theta)?
400
Oliver, whose mass is 65 kg, and Olivia, whose mass is 45 kg, sit 2.0 m apart in their physics classroom. This is why Oliver and Olivia do not drift toward each other.
What is Earth's gravitational force is stronger than the force between them?
400
You drop a physics textbook, whose mass is 2.0 kg, to a friend who is standing on the ground 10 m below. This is the potential energy of the book just before you release it, its kinetic energy just before your friend catches it in her outstretched hands, which are 1.5 m above the ground level, and the book's velocity just before it is caught.
What is PE = 196 J, KE = 167 J, and 12.9 m/s?
500
Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60 km/h and the other is moving at 40 km/h. They meet in this many hours.
What is 1.5 hours?
500
A 175-N sign is supported in a motionless position by two ropes that each make 53 degree angles with the horizontal. This is the tension in the ropes.
What is 109 N?
500
A mass of 30 kg is suspended from a massless rope on one side of a massless, frictionless pulley. A mass of 10 kg is connected to the rope on the other side of the pulley and is sitting on a frictionless ramp with an angle of inclination of 30°. This is the tension in the rope and the acceleration of the system.
What is a = 6.25 m/s^2; FT = 112.5 N?
500
In a science fiction story, a planet has half the radius of the Earth, but the same mass as the earth. This is the acceleration due to gravity at the surface of this planet as a function of g.
What is 1/2g?
500
A projectile whose mass is 9.4 kg is fired vertically upward. On its upward flight, an energy of 68 kJ is dissipated because of air resistance. It travels this much higher if the air resistance had been made negligible.
What is 738 m?
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