Questions from College Physics

Q: Construct motion diagrams showing the velocity and acceleration of a projectile at

Construct motion diagrams showing the velocity and acceleration of a projectile at several points along its path, assuming (a) The projectile is launched horizontally (b) The projectile is launched at...

Q: A particle starts from rest and accelerates as shown in Figure P2

A particle starts from rest and accelerates as shown in Figure P2.20. Determine (a) The particle’s speed at t = 10.0 s and at t = 20.0 s, and (b) The distance traveled in the first 2...

Q: Chinook salmon are able to move upstream faster by jumping out of

Chinook salmon are able to move upstream faster by jumping out of the water periodically; this behaviour is called porpoising. Suppose a salmon swimming in still water jumps out of the water with a sp...

Q: A daredevil is shot out of a cannon at 45.0

A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 25.0 m/s. A net is positioned a horizontal distance of 50.0 m from the cannon. At what height above the cannon s...

Q: If raindrops are falling vertically at 7.50 m/s

If raindrops are falling vertically at 7.50 m/s, what angle from the vertical do they make for a person jogging at 2.25 m/s?

Q: A celebrated Mark Twain story has motivated contestants in the Calaveras County

A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog Jubilee, where frog jumps as long as 2.2 m have been recorded. If a frog jumps 2.2 m and the launch angle i...

Q: A landscape architect is planning an artificial waterfall in a city park

A landscape architect is planning an artificial waterfall in a city park. Water flowing at 0.750 m/s leaves the end of a horizontal channel at the top of a vertical wall h = 2.35 m high and falls into...

Q: A golf ball with an initial speed of 50.0 m

A golf ball with an initial speed of 50.0 m/s lands exactly 240 m downrange on a level course. (a) Neglecting air friction, what two projection angles would achieve this result? (b) What is the maximu...

Q: Antlion larvae lie in wait for prey at the bottom of a

Antlion larvae lie in wait for prey at the bottom of a conical pit about 5.0 cm deep and 3.8 cm in radius. When a small insect ventures into the pit, it slides to the bottom and is seized by the antli...

Q: One strategy in a snowball fight is to throw a snowball at

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. Then, while your opponent is watching that snowball, you throw a second one at a low angle timed to arrive be...