Exam 10: Force and Force-Related Parameters

A "suction cup" sticks to the wall because it is

All forces result from direct contact.

Force is a fundamental dimension.

If you push on the wall with a force of 100 N, the wall pushes back on you with a force of 100 N.This is a basic description of a. Newton's $1 ^ { \text {st } }$ Law b. Newton's $2 ^ { \text {nd } }$ Law c. Newton's $3 ^ { \text {rd } }$ Law d. Newton's $4 ^ { \text {th } }$ Law

A satellite orbits the earth instead of flying off into space because

The physical quantity of force is a vector quantity (has direction).

In general, the viscosity of gases increases with increasing temperature.

Over the elastic range, the deformation of a spring is directly proportional to

Forces tend to do what to objects upon which they act?

What is the SI unit for pressure? a. $\mathrm { Pa }$ b. $\mathrm { MPa }$ c. $\mathrm { mmH } _ { 2 } \mathrm { O }$ d. $\mathrm { mmHg }$

Weight and mass are essentially the same thing.

Objects at rest tend to remain at rest and objects in motion tend to remain in motion, unless acted upon by an unbalanced external force.This is a basic description of a. Newton's $1 ^ { \text {st } }$ Law b. Newton's $2 ^ { \text {nd } }$ Law c. Newton's $3 ^ { \text {rd } }$ Law d. Newton's $4 ^ { \text {th } }$ Law

What does G stand for in the following equation? $F = \frac { G m _ { 1 } m _ { 2 } } { r ^ { 2 } }$

One Newton is equal to a. $1 \frac { \mathrm { kg } \cdot m } { \mathrm {~s} ^ { 2 } }$ b. $1 \frac { \mathrm { kg \cdot} \mathrm { m } } { \mathrm { s } }$ C. $1 \frac { \mathrm { kg } \cdot \mathrm { m } ^ { 2 } } { \mathrm {~s} ^ { 2 } }$ d. $1 \frac { \mathrm { kg } ^ { 2 } \cdot \mathrm { m } } { \mathrm { s } ^ { 2 } }$

W What does $\mu$ stand for in the following equation? $\quad F _ { \max } = \mu N$ a. coefficient of friction b. coefficient of restitution c. spring constant d. viscosity

In his second law, Newton observed that force and acceleration are

Forces always come in pairs, equal in magnitude and opposite in direction.

What does g stand for in the following equation? $W = m g$

If an object is moving and there are no unbalanced forces acting on it, the object will

A tow truck exerts a force of 2000 N on a car, causing it to accelerate at $4 \mathrm {~m} / \mathrm { s } ^ { 2 }$ .What is the mass of the car?