9.Q2.Dynamics, 9/8

These 3 blocks rest on a table, the weight for A is 1N, B is 2N and C is 3N . The magnitude of the force exerted on Block B by Block A is:

• 6 N

• 3 N

• 2 N

• 5 N

• 1 N

What will cause an object’s motion to change?

• Applied forces

• Unbalanced Forces

• Balanced Forces

• Net Forces

An object moves horizontally at a decreasing velocity. Which of the following is true?

• Applied force is less than the frictional force

• Net force is zero

• Net force is positive

• Net force is equal to the frictional force

• Normal force and gravitational force each have a magnitude of 0 N

The SI unit for force is called the Newton. Which expression is equivalent to N?

• kg.m/s

• kg.m/s^2

• kg.m^2/s^2

• kg.m^2/s^3

• kg.m^2/s

Which of the following is not a type of force?

• Tension

• Regular

• Normal

• Buoyant

• Weight

The graph represents the motion of a truck starting to tow a 500 kg car. What force is the truck exerting on the car?

• 4000 N

• 5000 N

• 250 N

• 200 N

• 2000 N

Which of Newton’s Laws is the most relevant to explaining why rockets are able to fly upwards?

• 1st

• 2nd

• 3rd

• Law of Equal and Opposites

• Law of Inertia

These X-T graphs represent the motion of 4 different objects applying a force. Which object is producing the largest force?

• a

• b

• c

• d

• can not determine needed information from an XT graph

Newton’s First Law only applies to objects that are at rest

• True

• False

It is possible for an asteroid in interstellar space, completely alone, to experience a force.

• True

• False