Answer to Question #193651 in Classical Mechanics for Kaitlyn Hosking

Question

3. A girl walks forward 10m then comes back 7m.  What are her distance travelled and her displacement? (T1:3)

12. The table below gives performance forgive for cars. (T3: 12)

14. Two forces act on a parachutist during a drop. One force is the weight W (500N) of the parachutist. The other force is the upwards pull P (400N) from the parachute harness on the parachutist. The parachutist has a mass of 50 kg. (T5:14)

a. What is the size of the unbalanced force acting on the parachutist?

b. What is the acceleration of the parachutist?

6. A student of mass 50kg climbs the college stairs using 2500J of energy, calculate the height of the stairs. (T9:6)

10. An astronaut of mass 70 kg climbs to a height of 5 m on the moon and gains 560 J of gravitational potential energy. What must be the gravitational field strength on the moon? (T9:10)

14. What is the speed of a stone of mass 2 kg if it has 36 J of kinetic energy? (T9:14)

Answer 1

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