Dimension motion
What is the study of motion called in physics?
What is "kinematics?"
The police are trying to determine the speed of a car that slid off a small bridge on a snowy night and landed in a snow pile 4.00m below the level of the road. The tire tracks in the snow show that the car landed 12.0 m measured horizontally from the bridge. How fast was the car traveling when it left the road?
What is " 13.42 m/s"?
What is the combination of all of the forces acting on an object ?
What is "the net force?"
What is an object's change in momentum equal to?
What is "the impulse acting on the object?"
A 1 kg ball is held at rest of 2 meters above the ground. What is the gravitational potential energy of the ball-Earth system?
What is "19.62 J?"
What is the difference between Distance and Displacement?
What is "Distance is a vector and displacement is a scalar?"
What is the horizontal range if a player kicks a football from ground level with a velocity of magnitude 27 m/s at a angle of 30 above the horizontal?
What is "64.m"?
What law is it when the net force on a object is zero, the object at rest stays at rest, while the object in motion stays in motion?
What is "Newton's first law of motion?"
A layer of padding is added to car dashboards because it can reduce some injuries during a collision. How does the padded dashboard make people safer?
What is "it increases the time pf impact during the collision?"
Ms.Evers holds a 2.5kg textbook at a height of 5 meters above the ground. What is the gravitational potential energy of the text book-Earth system?
What is "122.625 J"?
A vector remains unchanged if....
What is " only if it has moved parallel to its original direction?"
Billy-Joe stands on the Talahatchee Bridge kicking stones into the water below. If he kicks a stone with a horizontal velocity of 3.50 m/s, and it lands in the water a horizontal distance of 5.40m from where he is standing, how far below will the stone land?
What is "11.6?"
What is the force that brings nearly everything to a stop?
What is "friction?"
When does momentum of a system is conserved only?
What is " when there is no net external force acting on the system?"
A bullet with a mass of 0.010 kg has a kinetic energy of 230 J. What is the velocity of the bullet?
What is 214.476?
Does a zero acceleration mean rest?
What is "yes"?
Harry accidentally falls out of a helicopter that is traveling at 100m/s. He plunges into a swimming pool 2 seconds later. Assuming there is no air resistance, what was the horizontal distance between harry and the swimming pool when he fell from the helicopter?
What is "200m?"
What two components do forces have?
What is "Magnitude(size) and direction ?"
Suppose a cannon is made of a very strong but very light material. Suppose also that the cannonball is more massive than the cannon itself, what system would be in use?
What is " the target would be a safer place than where the operator is located?"
A book is lying at test on the ground. A student up the book and places it on top of the bookshelf. What type(s) of energy does the book-Earth system now have?
What is "potential energy"?
What quantity is used to describe motion and is an example of vector quantity?
What is "Average velocity?"
A pelican flying along a horizontal path drops a fish from a height of 5.4 meters while traveling 5.0 m/s. How far does the fish travel horizontally before it hits the water below?
What is "5.25m?"
Jeff is pushing a rock up a hill with a force of 85 N. If Chris comes to help and Chris can push with a force of 60 N, what is the net force of the rock?
What is "145N?"
A ball is moving at 3.0 m/s and has a momentum of 9kg m/s, What is the ball's mass?
What is "3.0 kg?"
A crate is pushed with a force of 100 N across a distance of 10 meters, how much work is done on the crate? How much power is used if the block is pushed for 5 seconds?
What is "Work-1000 J, power-200 W?"