# Physics

All new and solved questions in Physics category

##### A place kicker must kick a football from a point 36.0 meters (about 40yds)from the goal
A place kicker must kick a football from a point 36.0 meters (about 40yds)from the goal. as a result of the kick, the ball must clear the crossbar, which is 3.05 meters high. When kicked the ball leaves the ground with a speed of 20.0 m/s at and angle of 53 degrees to the horizontal a) how much does...
##### One of the fastest recorded pitches major-league baseball, thrown by Nolan Ryan in 1974, was clocked at 100.8 mi/hr
One of the fastest recorded pitches major-league baseball, thrown by Nolan Ryan in 1974, was clocked at 100.8 mi/hr. If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate 60.0 ft away?...
##### A rifle is fired straight up, and the bullet leaves the rifle with an initial velocity magnitude of 724 m/s
A rifle is fired straight up, and the bullet leaves the rifle with an initial velocity magnitude of 724 m/s. After 5.00 s the velocity is 675 m/s. At what rate is the bullet decelerated?...
##### Harry jumps horizontally from the top of a building that is 20.0 m high
Harry jumps horizontally from the top of a building that is 20.0 m high. He hopes to reach a swimming pool that is at the bottom of the building, 14 m horizontally from the edge the building. If he is to reach the pool, what must his jumping speed be?...
##### I'm confused about how to set up the following relative velocity problem:George V Coast in Antarctica is the windiest place on Earth
I'm confused about how to set up the following relative velocity problem:George V Coast in Antarctica is the windiest place on Earth. Wind speeds there can reach 3.00e10^2 km/h. If a research plane flies against the wind with a speed of 4.50e10^2 km/h relative to the wind, how long does it take ...
##### A toy car in the figure below runs off the edge of a table that is h = 1.375 m high
A toy car in the figure below runs off the edge of a table that is h = 1.375 m high. The car lands d = 0.375 m from the base of the table.How fast was the car going on the table?...
##### A 10kg block is released from the top of a ramp 45m high
A 10kg block is released from the top of a ramp 45m high. the track is frictionless except for a 6m stretch in the middle. when the block reaches the end, it compresses the k=2250N/m spring a distance of 0.030m. Find the coefficient of friction over the rough patch in the middle....
##### A diver completes 3 1/2 somersaults in 1.7 seconds
a diver completes 3 1/2 somersaults in 1.7 seconds. what is the average angular speed in rad/sec of the diver?...
##### A person jumps from the roof of a house 3.6 -m high
A person jumps from the roof of a house 3.6 -m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 {rm m}. If the mass of his torso (excluding legs) is 46 kg. Find the average force exerted on his torso by his legs during dece...
##### A student lifts a 1.2 kg bag from her desk, which is 0.59 m high, to a locker that is 2.9 m high
A student lifts a 1.2 kg bag from her desk, which is 0.59 m high, to a locker that is 2.9 m high. What is the gravitational potential energy of the bag relative to the desk? PE=mgh 1.2(9.80)(2.9) = 34.1...
##### A lead ball is dropped into a lake from a diving board 4.70m above the water
A lead ball is dropped into a lake from a diving board 4.70m above the water. After entering the water, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the water. The ball reaches the bottom 4.10s after it is released. I just need the number....
##### A diver running 2.4 m/s dives out horizontally from the edge of a vertical cliff and 2.6 s later reaches the water below
A diver running 2.4 m/s dives out horizontally from the edge of a vertical cliff and 2.6 s later reaches the water below. How high was the cliff?...
##### Another scheme to catch the roadrunner has failed
another scheme to catch the roadrunner has failed. A safe falls from rest from the top of a 34.6 m high cliff toward Wiley Coyote, who is standing at the base. Wiley first notices the safe after it has fallen 17.2 m. The acceleration of gravity is 9.8m/s^2. how long does he have to get out of the wa...
##### A cannonball is fired from ground level at an angle of 60.0 degrees with the ground at a speed of 72.0 m/s
A cannonball is fired from ground level at an angle of 60.0 degrees with the ground at a speed of 72.0 m/s. What is the initial velocity along the x-axis?What is the initial velocity along the y-axis?What is the total time in the the air if the cannonball impacts the ground at the same vertical heig...
##### A spy satellite is in circular orbit around Earth
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? [Answer in Km] (b) What is the satellite's acceleration? [Answer in m/s^2] I see this posted over and over again and I have about 4 equations, 20 dif...
##### I need help in my physics homework
I need help in my physics homework... plz help its about average acceleration...1. As the suttle bus comes to a sudden stop to avoid hitting a dog, it accelerates unformaly at -4.1 m/s(squared) as it slows from 9.0 m/s ti 0.0 m/s. Find the time interval of acceleration for the bus.2. A car traviling...