2. a 20 gram bullet exits the rifle at a speed of 985 m/s. the gun barrel is 0.8 m long. What was the force during the firing.
3. A force of 380 N is applied to a 38 kg object over a distance of 2.5 meters. What is the speed
of the object after it accelerates?
4. A 21,000 kg train is traveling at 21 m/s. It accelerates as it enters a tunnel because of a constant force of 45,000 N from the engine. The train is in the tunnel for 5.25 seconds. What is the final speed of the train?
Answers: 3
Physics, 22.06.2019 07:50
Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).
Answers: 3
Physics, 22.06.2019 14:30
What is the relationship between the direction of motion of the balloon and the wind currents
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Physics, 22.06.2019 15:50
The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?
Answers: 2
Physics, 22.06.2019 16:40
An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?
Answers: 3
2. a 20 gram bullet exits the rifle at a speed of 985 m/s. the gun barrel is 0.8 m long. What was th...
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