Engineers at the Johnson Space Center must determine the net force needed for a rocket to
achieve an acceleration of 70 m/s2
. If the mass of the rocket is 45,000 kg, how much net
force must the rocket develop?
3,150,000 N
An apple fell fro a tree at the rate of 2 m/s2 and hit my head with the force of 3N.
What is the mass of the apple?
1.5kg
What is the mass of a falling rock if it produces a force of 147 N?Acceleration of gravity is 9.8m/s2
15kg
a bird with a mass of .3kg dived bombed with an acceleration of 6m/s2. What force did it hit the worm with?
1.8N
What is inertia?
An objects resistance to a change in motion.
What is mass measured in?
kg, kilograms
. A10 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3 m/s2?
30N
What is force measured in?
Newtons
What is the acceleration of softball if it has a mass of 0.5 kg and hits the catcher's
glove with a force of 25 N?
50 m/s2
What is acceleration measured in?
meters per second squared. m/s2
A car ran into a wall with the force of 180,000 N and has a mass 3000 Kg what was the acceleration rate of the car?
60m/s2
What net force is required to accelerate a car at a rate of 2 m/s2
if the car has a
mass of 3,000 kg?
6,000 N
What is newton's first law?
An object in motion stays in motion, an object at rest stays at rest unless acted upon by an unbalanced force.
What is Newton's 2nd law?
Force = Mass x Acceleration
Engineers at the Johnson Space Center must determine the net force needed for a rocket to
achieve an acceleration of 70 m/s2
. If the mass of the rocket is 45,000 kg, how much net
force must the rocket develop?
3,150,000 N
In outer space how long would a satellite orbit the earth?
Endlessly.
When two teams are playing tug of war and neither team wins. What is said of the forces?
They are balanced
There was a huge hog that was walking at the rate of .5m/s2. It's mass is 2000 kg
how much force was needed to get it moving?
1000N
You were so hungry the you stabbed a meatball with a mass of .5 kg at the acceleration rate of 4 m/s2, What is the Force you used to fork that meatball.
2N
When a soccer ball is kicked. What would we say of the force?
it is unbalanced
How do we describe force?
A push or a pull
How does the law of inertia effect the passengers on a train that is suddenly slowing down?
They are abruptly pushed forward as their body wants to continue at the same speed as the train was traveling.
A sled traveling at 3 m/s2 with a mass of 4kg will hit the wall with how much force?
12N
what are the two forces that stop an object in motion?
Gravity, friction
Sir Isaac Newton was known for what accomplishment?
Newtons 3 laws and discovery of gravity
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