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Physics: Speed of car at bottom of driveway; initial speed of bullet20 A 2.10 x 10³ kg car starts from rest at the top of a 5.0 m long driveway that is sloped at 20° with the horizontal. If an average friction force of 4.0 x 10³ N impedes the motion, find the speed of the car at the bottom of the driveway.
An 8.00 g bullet is fired into a 2.5 kg block that is initially at rest at the edge of a 1.0 m high table. The bullet remains in the block, and after impact the block lands 2.00 m from the bottom of the table. Determine the initial speed of the bullet.
A car travelling at 25.0 {rm m/s} runs out of gas while travelling up a 22.0^circ slope. How far will the car go up the hill before it runs out of gas.
A 100 kg cannon at rest contains a 10-kg cannon ball. When fired, cannon ball leaved the cannon with a speed of 450 m/s. What is the recoil speed of the cannon.
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
A hiker's trip consists of three segments. Path A is 7.00 km long heading 60.00 degrees north of east. Path B is 6.00 km long in the direction due east. Path C is 5.00 km long heading 315 degrees counter clockwise from east. Graphically add hiker's d..
On a cool morning, while the temperature is 12.0 deg Celsius, you measure the pressure in your car tires to be 20psi. After driving 40.0 mi on the freeway, the temperature of your tires is 56deg Celsius. What pressure will your tire gauge now show..
What are the x and y components of the shell.
A ramp is 25 meters long and is inclined at 30 degrees with the horizontal. A block of mass 25 is pulled up at a constant acceleration of 1 m/s2. The coefficient of kinetic friction is 0.15. If the box starts at rest from the bottom, what would be..
Two large metal plates of area 1.20m2 face each other. They are 4.8cm apart and have equal but opposite charges on their inner surfaces. The strength of the electric field between them is 63N/C.what is the magnitude of the charge on each plate.
How many 111 W lightbulbs can you use in a 107 V circuit without tripping a 16 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 107 V.)
Determine the normal force exerted by the road on the car, the normal force exerted by the car on the 73-kg driver, and the car speed at which the normal force on driver equals zero.
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
Find out the speed of a 56.7 kg thrill seeker at the bottom of the slide, assume no friction. If the thrill seeker has a speed of 24.1 m/s at the bottom, find out the change in mechanical energy due to friction.
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