Questions from College Physics

Q: Figure CQ2.6 shows strobe photographs taken of a disk moving

Figure CQ2.6 shows strobe photographs taken of a disk moving from left to right under different conditions. The time interval between images is constant. Taking the direction to the right to be positi...

Q: A ball is thrown vertically upward. (a) What

A ball is thrown vertically upward. (a) What are its velocity and acceleration when it reaches its maximum altitude? (b) What is the acceleration of the ball just before it hits the ground?

Q: A tennis player moves in a straight-line path as shown

A tennis player moves in a straight-line path as shown in Figure P2.8. Find her average velocity in the time intervals from (a) 0 to 1.0 s, (b) 0 to 4.0 s, (c) 1.0 s to 5.0 s, and (d) 0 to 5.0 s.

Q: Two cars travel in the same direction along a straight highway,

Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. (a) Assuming they start at the same point, how much sooner does the faster...

Q: An athlete swims the length L of a pool in a time

An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting position in a time t2. If she is swimming initially in the positive x - direction, determine her average...

Q: Light travels at a speed of about 3 x 108 m/

Light travels at a speed of about 3 x 108 m/s. (a) How many miles does a pulse of light travel in a time interval of 0.1 s, which is about the blink of an eye? (b) Compare this distance to the diamete...

Q: A football player runs from his own goal line to the opposing

A football player runs from his own goal line to the opposing team’s goal line, returning to the fifty-yard line, all in 18.0 s. Calculate (a) His average speed, and (b) The magnitude of his average...

Q: Figure 2.4 shows the unusual path of a confused football

Figure 2.4 shows the unusual path of a confused football player. After receiving a kickoff at his own goal, he runs downfield to within inches of a touchdown, then reverses direction and races back un...

Q: True or False? (a) A car must always

True or False? (a) A car must always have an acceleration in the same direction as its velocity. (b) It’s possible for a slowing car to have a positive acceleration. (c) An object with constant nonzer...

Q: Express the location of the fly in Problem 40 in polar coordinates

Express the location of the fly in Problem 40 in polar coordinates. Data from Problem 40: A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling...