Practice Problems

1
Practice Problems

• If a rocket is launched with a velocity 80.0 m/s
  straight up, how high will it rise?

2
Practice Problems

• If three 1.00 kg apples are placed on a hanging
  spring, it stretches 10.0 cm. What is the spring
  constant?

3
Practice Problems

• A 75.0 kg person, starting from rest, slides down
  a slide 4.00 m long inclined at an angle of
  35.0. The person reaches the bottom at a speed
  of 6.00 m/s. What is the efficiency of the slide?

4
Practice Problems

• A 500 N basket is lifted 6.00 m at a constant
  speed with a pulley system. The force pulled on
  the rope to lift it is 165 N. If the efficiency
  is 65.0, how far is the rope pulled?

5
Practice Problems

• A student with a mass of 80.0 kg runs up three
  flights of stairs in 12.0 seconds. If the student
  went a vertical distance of 8.00 meters, what was
  the students power?

6
Practice Problems

• Tarzan is hanging onto a 10m long vine that makes
  a 55 angle with vertical. He starts his swing
  with no velocity. What will be his speed when he
  gets to the bottom of the swing?

7

• A 2 kg block is 1 m high when pressed against a
  spring that is compressed 20 cm. When the block
  slides down a frictionless path and hits an
  identical spring it compresses it 30 cm. Find the
  constant of the springs.

1 m