Physics Kinematics Level: Misc Level
A child on a sled on a frictionless snowy hill of height 30 m has an initial potential energy of 9000 N. The child slides down the hill. When she reaches a height of 10 m what is her kinetic energy
Physics Kinematics Level: Misc Level
What is the initial speed of a toy rocket launched from the surface of the Earth and reaching a height of 20.2 km?
Physics Kinematics Level: Misc Level
A stunt driver wants to make his car jump over 8 cars parked side by side below a horizontal ramp. With what minimum speed must he drive off the horizontal ramp? The vertical height of the ramp is h = 1.55 m above the cars and the horizontal distance he must clear is d =19.6 m.
Physics Kinematics Level: Misc Level
A sprinter accelerates from rest until he reaches a velocity of 12.0 m/s and then continues running at this velocity. If he takes 11.0 s to cover 100 m, what was his acceleration and how long did it last?
Physics Kinematics Level: Misc Level
A skier coasts down a a very smooth, 10 m high slope. If the speed of the skier on the top of the slope is 5.0 m/s, what is his speed at the bottom of the slope.
Physics Kinematics Level: Misc Level
A book flies past your dorm window (which is 1 m tall), taking 0.25 s to pass. Assuming it was dropped, from what height (above your window) was the book dropped?
Physics Kinematics Level: Misc Level
At the scene of a highway collision, skid marks stretch out for 90 m away from the collision site. Assuming the deceleration of the vehicle was at least 6 m/s2, estimate the speed of the car before the incident.
Physics Kinematics Level: Misc Level
You and a friend are taking a walk on a cliff with the ocean 20 m away from the bottom of the cliff. You regularly play baseball and know that the furthest you can throw a ball is 10 m. You throw a baseball -sized rock with all your might and it barely makes it to the water . You tell your friend that you can figure out the height of the cliff but he doesn t believe you. How could you explain to your friend how to find the height of the cliff?Please give solution methods.
Physics Kinematics Level: Misc Level
A projectile is launched with an initial speed of 60.0 m/s at an angle of 30.0 degrees above the horizontal. The projectile lands on a hillside 4.00 s later. Neglect air friction. a what is the projectiles velocity at the highest point of its trajectory? b.What is the straight line distance from where the projectile was launched to where it hits its target?
Physics Kinematics Level: Misc Level
Tom the cat is chasing jerry the mouse across the surface of a table 1.5 m above the floor. jerry steps out of the way at the last second and Tom slides off the edge of the table at a speed of 5.0 m/s. Where will Tom strike the floor and what velocity components will he have just before he hits?
Physics Kinematics Level: Misc Level
One of the fastest recorded pitches in major league baseball was clocked at 101.0 m/h. If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate 60.5 ft away?
Physics Kinematics Level: Misc Level
In Bosnia, the ultimate test of a young mans courage once was to jump off a 400 year old bridge (now destroyed) into the River Neretva, 21 meters below the bridge. The free fall acceleration is 9. 80 m/s^2. a) How long did the jump last?
b. How fast was the diver traveling upon impact with the river?
c. If the speed of sound in air is 339 m/s, how long after the diver took off did a spectator on the bridge hear the splash?
Physics Kinematics Level: Misc Level
The driver of a truck slams on the brakes when he sees a tree blocking the road.The truck slows down uniformly with an acceleration of - 4.90 m/s ^2 for 3.80 s. making skid marks 54.1 m long that end at the tree.with what speed does the truck then hit the tree?
Physics Kinematics Level: Misc Level
A box is sliding down a plank inclined at an angle of 20% from the horizontal. Find the acceleration of the box, neglecting friction and air resistance.
Physics Kinematics Level: Misc Level
A football player kicks a ball at an angle of 37% from the horizontal with an initial speed of 50 ft /sec, and the ball moves in a vertical plane. Find the elapsed time from kickoff until the ball reaches its highest point. Neglect air friction.
what the highest point reached by the ball in the above question?
