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A net force of 5.34 N acting for 4.23 seconds on a mass initially at rest causes it to travel 4.75 m in a straight line. What is the mass?
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- A large crate of mass m is placed on the flatbed of a truck but not tied down. As the truck accelerates forward with acceleration a, the crate remains at rest relative to the truck. What force causes the crate to accelerate? (a) the normal force (b) the gravitational force (c) the friction force (d) the ma force exerted by the crate (e) No force is required.What is the magnitude of the net force needed to bring a 2085 kg car to rest from 25.6 m/s in 9.3 seconds?A 2-kg body of mass is moving on a horizontal frictionless surface with a velocity of 4 m/s. What is the net force required to keep the body moving with the same velocity and direction for 5.0 seconds?
- A 50 kg astronaut on a space-walk pushes with a force of 50 N against a satellite that has a mass of 250 kg. What is the acceleration of the astronaut and the satellite? If the astronaut was pushing for a time of 2 seconds, with what velocity does the satellite and the astronaut have after the push is over?A net force of 20 N is acting on a falling object. The object experiences air resistance of 6.0 N. If acceleration due to gravity is 9.81 m/s^2 what is the mass of the object?A constant net force of 1600 N gives a toy rocket an acceleration of 1.6 m/s. What is the mass of the rocket?
- If a force of 50.0 N acts on a 3.0 kg object for 2.0 seconds, what will its change in velocity be? A) 75 m/s B) 70 m/s C) 33 m/s D) 150 m/sA net force of 5.34 N acting for 4.23 seconds on a mass initially at rest causes it to travel 4.75 m in a straight line. What is the mass? A. 10.1 kg B. 23.2 kg C. 12.9 kg D. 76.2 kga 2000-kg car initially at rest is held by a friction force that can resist up to 1200 N. If the person can push with a force of 500 N, how many seconds will it take for the car to reach a speed of 1 m/sec?
- A 12 g bullet is accelerated from rest to a speed of 700 m/s as it travels 20 cm in a gun barrel. How largewas the applied accelerating force?A man weighs 345 N on Earth. What would he weigh on Jupiter, where the free-fall acceleration is 25.9 m/s^2? The acceleration of gravity is 9.8 m/s^2A cannonball is accelerated at 4.00E3 m/s2 by a force of 2.00E4 N. What is its mass?