You find yourself stuck in outerspace with nothing but your physics book and spacesuit. You have a mass of 108kg in your suit and your physics book has a mass of 3.7 kg. In order to make it back to your stationary spaceship before running out of air you must move at .29 m/s. How fast in m/s do you have to throw your physics book to achieve the speed

A physics student, in a stationary elevator, places a 240.0 g mass on an electronic balance. The student hits the elevator button and it begins to move upwards. While the elevator is moving, the student records this information Time = 0 to 3.0 sec the balance reads 278 grams Time = 3.0 - 12 sec the balance reads 240. grams Time = 12.0 to 15.0 sec the balance reads 192 gram How far up (in meters) did the elevator travel? Consider: UP to be (+), DOWN to be (-) and g =9.8 m/s2 .  ROUND YOUR ANSWER TO A WHOLE NUMBER of meters (no decimal places) HINT: This problem requires finding THREE different displacements and adding them up! 2nd HINT:  You will need to (A) use your equations of motion or (B) make a v-t graph to find those displacements!

A paratrooper weighing 180 pounds (including equipment) falls vertically downward from an altitude of 5000 feet and open the parachute after 10 seconds of freefall. Assume that the resistance force of the air is 0.75v when the parachute is closed and 12v when the parachute is open, where the velocity v it is measured in feet / sec. to. a. Find the speed of the skydiver when open the parachute b. find the distance of fall before it opens the parachute. c. What is the limiting velocity vL after it is open the parachute? d. Determine how long the skydiver is in the air after the parachute opens. and. Plot the graph of velocity versus time from the beginning of the fall until the skydiver arrives down

Suppose I drop a 60kg anvil from rest and from such a height that the anvil reaches a speed of 10m/s just before hitting the ground. Assume the earth was at rest before I dropped the anvil a. What is the earth's speed just before the anvil hits? b. How long would it take the earth to travel 1.0 micrometers at this speed?

6. A train is moving with a constant speed. The train moves 60 meters for every 1.5 seconds that elapses. a. Assume that we get 40 by dividing 60 by 1.5. What is the name that is commonly given to a quantity represented by this number 40? b. To denote the quantity completely, what additional information must be given besides the number 40? c. How would you interpret the number 40 in this instance? Your answer should mention distance and time. d. Use your interpretation (not algebra) to find the distance the train moves in 2.5 seconds.

A 12.5 kg box sits on a shelf that is 1.8 m high. If it is dropped, how fast will it be going just before it hits the ground?     m/s

A car (mass 1000 kg) is traveling at 60 mph (26.82 m/s) when the driver notices a cat 50 m ahead in the road. Wanting to save the feline's life, the driver slams on the brakes and comes to a stop 2 m in front of the cat. What was the car's acceleration as it was braking?

Please solve it fast.

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

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