Forces and Newton's Laws
It is the mass of an object that accelerates at 3.0 m/s² under the influence of a 5.0 N net force.
What is 1.7 kg?
This is the magnitude of work done by friction when a 10-kg box slides 5.0 meters across a floor with a coefficient of kinetic friction of 0.30.
What is 147 J?
By applying the impulse equation, crumple zones protect passengers during a crash by increasing the time of impact in order to decrease this.
What is force applied to the passengers?
Assuming the tangential velocity remains constant, this will happen to the required centripetal force if the radius of the circular path is cut in half.
What is it will double?
It is the angular displacement of a ball that travels a 2.00 m linear distance around a circular track with a 4.00 m radius.
What is 0.5 radians?
According to Newton's Laws, this overall physical quantity must be exactly zero if an object is moving at a constant velocity.
This is the amount of work a 3.0 horsepower machine can do in 30 seconds. (1 horsepower = 745.7 Watts)
What is 67,113 J?
Because kinetic energy is lost when two clay balls collide and stick together to move as a single mass, the collision is classified as this specific type.
What is an inelastic collision?
It is the centripetal acceleration of a car traveling 72 km/h around a level circular track with a 500 meter radius.
What is 0.8 m/s²?
It is the work done by a constant 15.0 Nm torque applied to stop a rolling wheel over an angular distance of 10.0 radians.
What is 150 J?
When a 1.0 kg bat swung with an acceleration of 30 m/s² strikes a 0.15 kg baseball, it's the resulting acceleration of the baseball.
What is the 200 m/s²?
It is the average power output in Watts of a machine that consumes 10,000,000 Joules of energy over the course of exactly one 24-hour day.
What is 115.7 W?
It is the speed a 1000 kg car must move to perfectly match the momentum of a 2000 kg truck traveling at 25 m/s.
What is 50 m/s?
For a carousel making 30 revolutions in 1 minute, these are the tangential velocities of Rider A at 2.0 meters and Rider B at 4.0 meters from the center.
What are 6.28 m/s and 12.57 m/s?
This is the angular velocity of an 8.0 kg disk with a 0.50 m radius if its angular momentum is 6.0 kg m²/s.
What is 3.0 rad/s?
It's the horizontal force required to get a 40-kg crate moving from rest on a level surface if the coefficient of static friction is 0.69.
Out of an object with mass 2m and speed 2v, an object with mass m and speed 3v, or an object with mass 4m and speed v, this is the one with the greatest kinetic energy.
What is the object with mass m and velocity 3v?
It is the velocity of an 80-kg astronaut who pushes off a 60-kg satellite in space, causing the satellite to travel 2.0 m/s Eastward.
What is 1.5 m/s Westward?
By Newton's Law of Universal Gravitation, tripling the distance between two attracting objects will cause the gravitational force to decrease by this factor.
What is a factor of 9?
Given a tightened torque of 60 Nm, it is the minimum perpendicular force applied to a 0.20-meter wrench needed to loosen a heavy duty bolt.
What is 300 N?