Questions from College Physics

Q: A brick is thrown upward from the top of a building at

A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 3.0 s, how tall is the building?

Q: From the window of a building, a ball is tossed from

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.00 m/s and angle of 20.0° below the horizontal. It strikes the ground 3.00 s later. (a)...

Q: A car is parked on a cliff overlooking the ocean on an

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective...

Q: An artillery shell is fired with an initial velocity of 300 m

An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. To clear an avalanche, it explodes on a mountainside 42.0 s after firing. What are the x - and y - coordi...

Q: A projectile is launched with an initial speed of 60.0

A projectile is launched with an initial speed of 60.0 m/s at an angle of 30.0° above the horizontal. The projectile lands on a hillside 4.00 s later. Neglect air friction. (a) What is the projectile’...

Q: A fireman d = 50.0 m away from a burning

A fireman d = 50.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 30.0° above the horizontal as shown in Figure P3.1...

Q: A playground is on the flat roof of a city school,

A playground is on the flat roof of a city school, 6.00 m above the street below (Fig. P3.19). The vertical wall of the building is h 5 7.00 m high, to form a 1-m-high railing around the playground. A...

Q: A graph of position versus time for a certain particle moving along

A graph of position versus time for a certain particle moving along the x - axis is shown in Figure P2.6. Find the instantaneous velocity at the instants (a) t = 1.00 s (b) t = 3.00 s (c) t = 4.50 s,...

Q: A cruise ship sails due north at 4.50 m/

A cruise ship sails due north at 4.50 m/s while a Coast Guard patrol boat heads 45.0° north of west at 5.20 m/s. What are (a) the x – component (b) y - component of the velocity of the cruise ship rel...

Q: Suppose a boat moves at 12.0 m/s relative

Suppose a boat moves at 12.0 m/s relative to the water. If the boat is in a river with the current directed east at 2.50 m/s, what is the boat’s speed relative to the ground when it is heading (a) Eas...