A 75-kg swimmer dives horizontally off a 500-kg raft. The diver's speed immediately after leaving the raft is 4.0 m/s. A micro-sensor system attached to the edge of the raft measures the time interval during which the diver applies an impulse to the raft just prior to leaving the raft surface. If the time interval is read as 0.20 s, what is the magnitude of the average horizontal force by diver on the raft?

a.900 N
b.450 N
c.525 N
d.1500 N


Answer: d.1500 N

Physics & Space Science

You might also like to view...

The emissivity of an ideal reflector has which of the following values?

a. 0 b. 1 c. 100 d. infinity

Physics & Space Science

A rectangular wooden block measures 10.0 cm × 4.00 cm × 2.00 cm. When the block is placed in water, it floats horizontally,

with its bottom face 1.65 cm below the surface. What is the density of the wood? The density of water is 1.00 g/cm3. A) 0.825 g/cm3 B) 1.21 g/cm3 C) 1.65 g/cm3 D) 0.606 g/cm3 E) 0.350 g/cm3

Physics & Space Science

An amount of an ideal gas is taken around the process shown. Which of the following statements about the internal energy of the states is true?

Physics & Space Science

Why is the surface of Mercury more level (flatter) than the surface of the Moon?

A. Heat from the Sun made Mercury's surface softer and more malleable. B. The Moon formed out of the debris from a collision of two larger bodies. C. Mercury has stronger gravity and had a hotter interior. D. Tidal forces from Earth have pulled the Moon out of shape.

Physics & Space Science