Gravitational force Gravity www.assignmentpoint.com.

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Gravitational force Gravity www.assignmentpoint.com

Gravitational force INCREASES with Mass DECREASES with Distance www.assignmentpoint.com

All objects in the universe are attracted to each other by the force of effort. friction. gravity. inertia. www.assignmentpoint.com

1 kilogram and 2 kilograms 2 kilograms and 1 kilogram Four pairs of objects have the masses shown below. If the objects in each pair are the same distance apart, the gravitational force between the objects in which pair is greatest? 1 kilogram and 1 kilogram 1 kilogram and 2 kilograms 2 kilograms and 1 kilogram 2 kilograms and 2 kilograms www.assignmentpoint.com

As an astronaut travels from Earth to a space station orbiting Earth, what happens to her mass and weight? Her mass decreases, but her weight remains the same. Her mass increases as her weight decreases. Her mass remains the same, but her weight decreases. Her mass decreases and her weight also decreases. www.assignmentpoint.com

Which hill would you slide down the fastest? hill A hill B hill C It would take the same time to slide down all of the hills. www.assignmentpoint.com

50 39.2 29.4 19.6 9.8 Projectile Motion 3 1 2 Velocity (m/s) seconds forward downward 50 39.2 29.4 19.6 9.8 seconds 3 1 2 www.assignmentpoint.com

Projectile Motion Velocity (m/s) forward downward 48 47 46 50 49 39.2 29.4 19.6 9.8 seconds 3 1 2 www.assignmentpoint.com

Simple Machines and work Lever Inclined plane Pulley Wedge Screw Wheel and axle www.assignmentpoint.com

Simple Machines Pulley Wheel & Axle Lever Inclined plane Screw Wedge Gear www.assignmentpoint.com

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Simple Machines Pulley Wheel & Axle Lever Inclined plane Screw Wedge Gear www.assignmentpoint.com

Which activity involves the use of a simple machine? riding on a seesaw flying a kite listening to a radio skiing down a hill www.assignmentpoint.com

Lever Wheel/Axle Pulley Wheel & Axle www.assignmentpoint.com

Simple Machine A mechanism that lowers the amount of force needed to do work, by increasing the distance. www.assignmentpoint.com

On which simple machine is a fulcrum found? pulley wheel axle lever www.assignmentpoint.com

ALL Simple Machines work the same way Force Distance x www.assignmentpoint.com

Lever action 2 meters 1 meter Force= ? Force=13 N www.assignmentpoint.com

Advantage= final distance starting distance Mechanical Advantage= final distance starting distance 9 meters 3 meters www.assignmentpoint.com

Mechanical Advantage= distance distance 8 meters 2 meters www.assignmentpoint.com

Satellites stay in place as they orbit because of . . . the repeated firing of rocket boosters. the gravitational pull of Earth. a narrow path through the vacuum of space. solar panels generating energy to hold them in place www.assignmentpoint.com