Motion, Forces and Energy

$6.0\ cm^3$

$15.0\ cm^3$

$60.0\ cm^3$

$600.0\ cm^3$

Gram ($g$)

Milligram ($mg$)

Newton ($N$)

Kilogram ($kg$)

A metre rule

A micrometer screw gauge

Vernier calipers

A measuring tape

Acceleration

Displacement

Speed

Total distance

$\text{m/s}$

$\text{m/s}^2$

$\text{km/h}$

$\text{kg m/s}$

$75\text{ km/h}$

$300\text{ km/h}$

$150\text{ km/h}$

$50\text{ km/h}$

A beam balance

A digital top-pan balance

A spring balance (Newton-meter)

A measuring cylinder

$20\ cm^3$

$30\ cm^3$

$50\ cm^3$

$80\ cm^3$

$0.2\ g/cm^3$

$5.0\ g/cm^3$

$72\ g/cm^3$

$720\ g/cm^3$

$12\text{ cm}$

$22\text{ cm}$

$10\text{ cm}$

$2\text{ cm}$

In the direction of the object's instantaneous velocity

Opposite to the direction of motion

Towards the center of the circle

Away from the center of the circle

$6\text{ N}$ to the right

$14\text{ N}$ to the right

$6\text{ N}$ to the left

$40\text{ N}$ to the right

The object must be at rest and have zero mass

No resultant force and no resultant moment

Equal forces on all sides and a high center of mass

Constant velocity and a large surface area

Near the hinges

In the middle of the door

Near the top edge of the door

As far as possible from the hinges

$Moment = Force \times perpendicular\ distance\ from\ pivot$

$Moment = Force / distance\ from\ pivot$

$Moment = Mass \times acceleration$

$Moment = Force \times area$

The center of gravity rises, making the bus more stable

The center of gravity stays the same, but the mass increases

The center of gravity rises, making the bus less stable

The center of gravity lowers, making the bus less stable

At any point on the circumference

At the geometric center of the circle, where there is no material

Halfway between the center and the edge

At the bottom-most point due to gravity

Increasing the mass of the engine on the top deck

Using thinner tires to reduce friction

Widening the distance between the wheels and lowering the chassis

Increasing the height of the car to see the track better

$2.5\text{ kg m/s}$

$7\text{ kg m/s}$

$10\text{ kg m/s}$

$20\text{ kg m/s}$

No external forces must act on the system.

The objects must be moving in the same direction.

The collision must be perfectly elastic.

The objects must have the same mass.

$\text{kg m/s}^2$

$\text{kg m/s}$

$\text{N/m}$

$\text{Joules}$

Tidal energy

Solar energy

Geothermal energy

Natural Gas

Total energy increases as it gains speed.

Gravitational potential energy is converted into kinetic energy.

Kinetic energy is converted into gravitational potential energy.

Both kinetic and potential energy decrease.

$1\text{ Newton per metre}$

$1\text{ Joule-second}$

$1\text{ Joule per second}$

$1\text{ Kilogram-metre per second}$

The height increases because atmospheric pressure is higher.

The height decreases because atmospheric pressure is lower.

The height remains the same because the glass tube is sealed.

The mercury will boil due to the lower pressure.

$1\ N/m$

$1\ N \cdot m$

$1\ N/m^2$

$1\ kg/m^2$

Hole A

Hole B

Hole C

All holes will have the same pressure