Questions from College Physics

Q: A player holds two baseballs a height h above the ground.

A player holds two baseballs a height h above the ground. He throws one ball vertically upward at speed υ0 and the other vertically downward at the same speed. Calculate (a) The speed of each ball as...

Q: A ball thrown straight up into the air is found to be

A ball thrown straight up into the air is found to be moving at 1.50 m/s after rising 2.00 m above its release point. Find the ball’s initial speed.

Q: The thickest and strongest chamber in the human heart is the left

The thickest and strongest chamber in the human heart is the left ventricle, responsible during systole for pumping oxygenated blood through the aorta to rest of the body. Assume aortic blood starts f...

Q: Emily challenges her husband, David, to catch a $1

Emily challenges her husband, David, to catch a $1 bill as follows. She holds the bill vertically as in Figure P2.67, with the center of the bill between David’s index finger and thu...

Q: A mountain climber stands at the top of a 50.0

A mountain climber stands at the top of a 50.0 - m cliff that overhangs a calm pool of water. She throws two stones vertically downward 1.00 s apart and observes that they cause a single splash. The f...

Q: One of Aesop’s fables tells of a race between a tortoise and

One of Aesop’s fables tells of a race between a tortoise and a hare. Suppose the overconfident hare takes a nap and wakes up to find the tortoise a distance d ahead and a distance L from the finish li...

Q: A weightlifter stands on a bathroom scale. (a)

A weightlifter stands on a bathroom scale. (a) As she pumps a barbell up and down, what happens to the reading on the scale? (b) Suppose she is strong enough to actually throw the barbell upward. How...

Q: In Bosnia, the ultimate test of a young man’s courage used

In Bosnia, the ultimate test of a young man’s courage used to be to jump off a 400 - year - old bridge (destroyed in 1993; rebuilt in 2004) into the River Neretva, 23 m below the bridge. (a) How long...

Q: A stuntman sitting on a tree limb wishes to drop vertically onto

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the s...

Q: A crate remains stationary after it has been placed on a ramp

A crate remains stationary after it has been placed on a ramp inclined at an angle with the horizontal. Which of the following statements must be true about the magnitude of the frictional force that...