Questions from College Physics

Q: Most of us know intuitively that in a head-on collision

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that th...

Q: Consider a frictionless track as shown in Figure P6.62.

Consider a frictionless track as shown in Figure P6.62. A block of mass m1 = 5.00 kg is released from â’¶. It makes a head-on elastic collision at â’· with a block of...

Q: A 2.0-g particle moving at 8.0

A 2.0-g particle moving at 8.0 m/s makes a perfectly elastic head-on collision with a resting 1.0-g object. (a) Find the speed of each particle after the collision (b) Find the speed of each particle...

Q: A bullet of mass m and speed v passes completely through a

A bullet of mass m and speed v passes completely through a pendulum bob of mass M as shown in Figure P6.64. The bullet emerges with a speed of v/2. The pendulum bob is suspended by a stiff rod of leng...

Q: An amateur skater of mass M is trapped in the middle of

An amateur skater of mass M is trapped in the middle of an ice rink and is unable to return to the side where there is no ice. Every motion she makes causes her to slip on the ice and remain in the sa...

Q: A 0.400-kg blue bead slides on a frictionless

A 0.400-kg blue bead slides on a frictionless, curved wire, starting from rest at point â’¶ in Figure P6.66, where h = 1.50 m. At point â’·, the bead collides elastic...

Q: A 730-N man stands in the middle of a frozen

A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he th...

Q: An unstable nucleus of mass 1.7 x 10-26

An unstable nucleus of mass 1.7 x 10-26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles. One particle, having a mass of m1 = 5.0 x 10-27 kg, moves in the...

Q: Two blocks of masses m1 and m2 approach each other on a

Two blocks of masses m1 and m2 approach each other on a horizontal table with the same constant speed, v0, as measured by a laboratory observer. The blocks undergo a perfectly elastic collision, and i...

Q: A rigid body is rotating counterclockwise about a fixed axis. Each

A rigid body is rotating counterclockwise about a fixed axis. Each of the following pairs of quantities represents an initial angular position and a final angular position of the rigid body. Which of...