Elf- Color Lock

It cannot be determined unless the height of the cliff is known.

4d

2d

2d

A diver initially moving horizontally with speed v dives off the edge of a vertical cliff and lands in the water a distance d from the base of the cliff. How far from the base of the cliff would the diver have landed if the diver initially had been moving horizontally with speed 2v?

Its vertical speed increases and its horizontal speed decreases.

Its vertical speed increases, and its horizontal speed remains the same.

Its vertical speed increases, and its horizontal speed increases.

Its vertical speed remains the same, and its horizontal speed remains the same.

Its vertical speed remains the same, and its horizontal speed increases.

A baseball player throws a ball horizontally. Which statement best describes the ball's motion after it is thrown? [Neglect the effect of air resistance.]

None of the answers are correct

2h g

2vh g

2h g

2v2 g

In a lab experiment, a sphere is rolled down a ramp so that it leaves the edge of the table with a horizontal velocity v. If the table has a height h above the ground, how far from the edge of table, a distance x, does the sphere land? You may neglect air resistance in this problem.

The rock's acceleration is zero at point D

straight down

straight up

to the right

to the left

A rock is thrown into the air at an angle relative to the vertical and follows the path shown above. Air resistance is negligible. What is the direction of the net acceleration of the rock at point D?

VP = VR < VQ

VQ < VP = VR

VQ < VR < VP

VR > VQ > VP

VP < VQ < VR

A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground.