A scientific fact
a close agreement by competent observers of observations of the same phenomena
Acceleration is defined as the change in
velocity divided by the time interval
If a ball is thrown upwards and caught on the way back down the speed would be
the same as the speed it had when thrown upwards
At the top of a ball's path it's instantaneous speed is
0m/s
If a projectile is fired straight up at a speed of 10m/s it will take how long for it to return back
2 seconds
The minimum resultant possible when adding a 1-N force to a 8-N force is
1-N
If an object is dragged with a force of 5-N the frictional force between the object and the floor is
5-N
Pressure is
force per area
If the force acting on a cart doubles what happens to the acceleration
it doubles
The horizontal component of a projectile's velocity is independent of
the vertical component of its velocity
Gravity is ALWAYS
going downward
If all people, animals, trains and trucks allover the world began to walk or run towards the east then
the Earth would spin a bit slower
Work is
force times distance
Power is
work done on an object divided by the time taken to do the work
Power is measured in
watts
The amount of PE possessed by an elevated object is equal to
the work done in lifting it
A car traveling at 10km/hr and a smaller car traveling at 20 km/hr
have the SAME kinetic energy
A horse near the outside rail has more or less linear speed than a horse near the inside
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