A car moved 80 km to the South. What is its displacement?
80 Km south
100
What is Friction?
Friction is the resistance of motion when one object rubs against another. It is a force and is measured in newtons.
100
What is speed?
The rate or measure of motion
100
What is force
Strength or energy as an attribute of physical action or movement.
100
What is Newtons first law
Objects at rest (not moving) will remain at rest unless acted on by an unbalanced force, and objects in motion, will remain in motion, unless acted on by an unbalanced force.
200
Average velocity can be calculated by dividing displacement over what?
Time
200
When two surfaces are coated with a lubricant, then they ?
Slide upon each other
200
How do you measure Speed
Distance divided by time
200
What is motion
The action or process of moving or being moved.
200
What is Newton's second law?
Objects with more mass require more force to maintain its acceleration.
300
How far will a car travel in 25 min at 12 m/s?
18Km
300
The maximum static frictional force is?
Independent of the area of surface in contact
300
What is velocity
The direction of speed.
300
A force can be _ or _
Can be push or pull
300
What's Newton's third law of motion?
For every action, there is an equal and opposite reaction.
400
If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of the car A relative to the car B?
50km/H
400
A force of 98 N is required to just start moving a body of mass 100 kg over ice. The coefficient of static friction is
0.1
400
What is the formula of velocity
Speed divide by time
400
How do you know if an object is move?
If the object moves from the reference point
400
Which law is the law of acceleration?
Newton's second law
500
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
19 km
500
A 20 kg block is initially at rest on a rough horizontal surface. A horizontal force of 75 N is required to set the block in motion. After it is in motion, a horizontal force of 60 N is required to keep the block moving with constant speed. The coefficient of static friction is ?
0.38
500
What is the speed of a sailboat that is traveling 100 meters in 120 seconds?
The sailboat has a speed of .83m/s.
500
If you increase the force on an object, what else is likely to increase?