QUESTION 1

A bag of rocks has a mass of 21.1kg.What is its weight here on the Earth?

QUESTION 2

A cup of coffee has a mass of 0.377kg.If you place this cup of coffee on a desk and let is sit there undisturbed,how much force is the desk exerting on it?

QUESTION 3

A car of mass 1466kg accelerates from rest to 16.7m/s in 7.30s.How much force was required to make this happen?

QUESTION 4

Consider a person standing on a scale in an elevator.If the elevator accelerates upwards with an acceleration of 1.23m/s² and the person has a mass of 105.7kg,what would the scale read?HINT:you need to take into account the acceleration due to gravity, as well as that of the elevator.

QUESTION 5

How much force is required to keep a car on a circular turn of radius 136.3 m if it is traveling at 17.8m/s and has a mass of 1347kg?

QUESTION 6

A box, initially at rest,has 27.3N of force exerted on it for 3.72 s. If the box has a mass of 5.74 kg, what was its velocityat this time?

QUESTION 7

Mars' gravitational pull is0.376 that of the Earth's. What would a person of mass 85.4 kg weigh on Mars?

QUESTION 8

How much force is required to bring a car of mass 1152kg,initially traveling at 16.0m/s,to rest in 7.2s?