Questions from Modern Physics


Q: An 8.00-kg block of wood sits at the

An 8.00-kg block of wood sits at the edge of a frictionless table, 2.20 m above the floor. A 0.500-kg blob of clay slides along the length of the table with a speed of 24.0 m/s, strikes the block of w...

See Answer

Q: A small wooden block with mass 0.800 kg is suspended

A small wooden block with mass 0.800 kg is suspended from the lower end of a light cord that is 1.60 m long. The block is initially at rest. A bullet with mass 12.0 g is fired at the block with a hori...

See Answer

Q: A 62.0-kg skier is moving at 6.

A 62.0-kg skier is moving at 6.50 m/s on a frictionless, horizontal, snow-covered plateau when she encounters a rough patch 4.20 m long. The coefficient of kinetic friction between this patch and her...

See Answer

Q: A 5.00-kg chunk of ice is sliding at

A 5.00-kg chunk of ice is sliding at 12.0 m/s on the floor of an ice-covered valley when it collides with and sticks to another 5.00-kg chunk of ice that is initially at rest (Fig. P8.73). Since the v...

See Answer

Q: Block B (mass 4.00 kg) is at rest

Block B (mass 4.00 kg) is at rest at the edge of a smooth platform, 2.60 m above the floor. Block A (mass 2.00 kg) is sliding with a speed of 8.00 m/s along the platform toward block B. A strikes B an...

See Answer

Q: Two blocks have a spring compressed between them, as in Exercise

Two blocks have a spring compressed between them, as in Exercise 8.24. The spring has force constant 720 N/m and is initially compressed 0.225 m from its original length. For each block, what is (a) t...

See Answer

Q: You are called as an expert witness to analyze the following auto

You are called as an expert witness to analyze the following auto accident: Car B, of mass 1900 kg, was stopped at a red light when it was hit from behind by car A, of mass 1500 kg. The cars locked bu...

See Answer

Q: A 1500-kg sedan goes through a wide intersection traveling from

A 1500-kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2200-kg SUV traveling from east to west. The two cars become enmeshed due to the impact and slide as...

See Answer

Q: A 0.150-kg frame, when suspended from a

A 0.150-kg frame, when suspended from a coil spring, stretches the spring 0.0400 m. A 0.200-kg lump of putty is dropped from rest onto the frame from a height of 30.0 cm (Fig. P8.78). Find the maximum...

See Answer

Q: A rifle bullet with mass 8.00 g strikes and embeds

A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring (Fig. P8.79). The impact compr...

See Answer