The hat of a jogger running at constant velocity falls off the back of his head. What will be the velocity of the cart as it reaches the bottom of the incline? Which of the following stars is likely to become a: How much energy was lost as the bullet was lodged in the block of wood? It appears to an observer on the Earth that we are at the center of an expanding universe.

During a lecture demonstration, a professor places two coins on the edge of a table. What will the speed of this boat now be as measured by an observer standing along the banks of the river? What will be the velocity of this ball when it reaches the ground? A race car, moving initially with a speed of What will be the rate of acceleration of the cart as it moves up the incline?

A simple machine is designed so that an input force of N produces an output force of 32 N. Draw a freebody diagram showing each of the forces acting on this car.

What is the kinetic energy of this car?

## 3: Two-Dimensional Kinematics (Exercises)

How much work was done on this disc during the 8. When would it be necessary for the archer to use the larger angle? Is this roller coaster moving fast enough when it reaches point A to remain in contact with the track and therefore to make it safely through the loop-the-loop? The weight of the engine is lbs.

As a result the sled moves along the horizontal surface with a constant speed. What will be the velocity homeworl this ball when it reaches the ground again? What is the thermal efficiency of this furnace? Projectile on an incline Opens a modal. What would be the gravitational potential energy of this rocket while orbiting Callisto at this altitude? What will be the total AMA of this compound machine? What is the magnitude of the frictional force between m 1 and m2?

The resultant displacement is the vector sum of the two displacements experienced during the trip. Share buttons are a little bit lower.

# Two-dimensional motion | Physics | Science | Khan Academy

Using the data from the figure, calculate the velocities:. What is the initial total momentum in this system? What is the magnitude of the gravitational force acting on this sled as it is pulled to the right at a constant speed?

What was the gravitational energy of the cart before it rolls down the incline? A swimmer heads directly across a river swimming at 1. What will be the tensions in each of the three segments of string?

The box slides up the incline until it comes to a halt. The ladders are each located 3.

## Two-dimensional motion

A vertical spring is hung from one end as shown to the right. A seagull flies at a velocity of 9.

What will be the magnitude of the normal force acting on this person? What is the magnitude of the frictional force on this block as it slides to the right?

Be sure to indicate the kijematics of each vector with an arrow head and label the resultant vector R! You throw one ball kinenatics at What will be the magnitude of the normal force acting on this sled as it is pulled to the right at a constant speed?

A ball is thrown downward from the top of a building meters tall with an initial speed of It encounters a wind that has a velocity of 4.

Unit vector notation Opens a modal.

What would be a reasonable estimated error on the slope of this tangent line? What will be the resulting angular acceleration?