a) A 75.2-kg jogger runs with a velocity of 2.85 m/s. How much kinetic energy does...
a) A 75.2-kg jogger runs with a velocity of 2.85 m/s. How much kinetic energy does the jogger have? b) During a football game, a 70-kg running back runs with a speed of 5.15 m/s while a 120-kg lineman runs with a speed of 2.20 m/s. Which player has the greater inertia? Why?
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a) A 75.2-kg jogger runs with a velocity of 2.85 m/s. How much
kinetic energy does...
Football Collision A 96 kg running back, moving at 5.29 m/s, runs into a 109 kg...
Football Collision A 96 kg running back, moving at 5.29 m/s, runs into a 109 kg defender who is initially at rest. What is the speed of the players just after their perfectly inelastic collision? Incorrect. What is the change in their total kinetic energy due to this totally inelastic collision?
Suppose that a 112.5 kg football player running at 8.5 m/s catches a 0.44 kg ball...
Suppose that a 112.5 kg football player running at 8.5 m/s catches a 0.44 kg ball moving at a speed of 25 m/s with his feet off the ground, while both of them are moving horizontally. Calculate the change in kinetic energy of the system, in joules, after the player catches the ball. Calculate the change in kinetic energy of the system, in joules, in this case.
A 70.0-kg football player runs North at 9.0 m/s and is met by a 60.0 kg...
A 70.0-kg football player runs North at 9.0 m/s and is met by a 60.0 kg defensive tackler running South at 10.0 m/s. The total momentum is?
(a) Find the linear momentum and kinetic energy of a bullet of mass 4.90 10-2 kg...
(a) Find the linear momentum and kinetic energy of a bullet of mass 4.90 10-2 kg moving at a speed of 315 m/s. linear momentum = kinetic energy = (b) Find the linear momentum and kinetic energy of a football player of mass 110 kg moving at a speed of 10.0 m/s. linear momentum = kinetic energy = (c) Find the linear momentum and kinetic energy of a truck of mass 1.00 104 kg moving at a speed of 20.5...
Kinetic energy is the energy of motion. How much kinetic energy does a spherical asteroid with...
Kinetic energy is the energy of motion. How much kinetic energy does a spherical asteroid with a 1 km diameter have if it is made out of iron (has a density of about 8 kg m-3) and hits Earth at a relative velocity of 10 km s-1?
How much kinetic energy does a 0.30-kg stone have if it is thrown at 44 m/s?...
How much kinetic energy does a 0.30-kg stone have if it is thrown at 44 m/s? 290
4. Imagine a 0.50-kg cart is launched with a velocity of 0.30 m/s. If the cart...
4. Imagine a 0.50-kg cart is launched with a velocity of 0.30 m/s. If the cart mass is tripled and its velocity is still 0.30 m/s, how is its momentum affected? 5. You attempt to tackle a football player who weighs 130 kg and is running toward you with a speed of 5.7 m/s. In another instance, when playing with your pet dog who weighs 41 kg, you try to tackle him when he is running at you with a...
1. A 10,000 KG truck is traveling at +20 m/s. What would happen to the momentum...
1. A 10,000 KG truck is traveling at +20 m/s. What would
happen to the momentum of the truck if it increases in velocity in
the same direction?
2. A 120 KG rugby player is running toward another player at 5
m/s. How much force needs to be applied over one second in order to
bring him to a stop?
3. if the acceleration of an object decreases, what happens to
the inertia?
A 10,000kg truck is traveling at +20m/s....
4. Kinetic energy is the energy of motion. How much kinetic energy does a spherical asteroid...
4. Kinetic energy is the energy of motion. How much kinetic energy does a spherical asteroid with a 1 km diameter have if it is made out of iron (has density of about 8 kg m-3) and hits Earth at a relative velocity of 10 km s-1? Convert your answer to megatons of TNT (1 megaton of TNT = 4.18 x 1015 joules).
On a touchdown attempt, a 95.0 kg running back runs toward the end zone at 3.75...
On a touchdown attempt, a 95.0 kg running back runs toward the end zone at 3.75 m/s. A 111-kg linebacker moving at 4.10 m/s meets the runner in a head-on collision. If the two players stick together. (a) What kind of collision is it and what quantity is conserved in this problem? (0.5 point) (b) Write down the appropriate conservation equation for the system. (0.5 points) (c) Find the final velocity vf. (both magnitude and direction) (0.5 points) (d) Calculate...
Football Collision A 96 kg running back, moving at 5.29 m/s, runs into a 109 kg defender who is initially at rest. What is the speed of the players just after their perfectly inelastic collision? Incorrect. What is the change in their total kinetic energy due to this totally inelastic collision?
How much kinetic energy does a 0.30-kg stone have if it is thrown at 44 m/s? 290
1. A 10,000 KG truck is traveling at +20 m/s. What would
happen to the momentum of the truck if it increases in velocity in
the same direction?
2. A 120 KG rugby player is running toward another player at 5
m/s. How much force needs to be applied over one second in order to
bring him to a stop?
3. if the acceleration of an object decreases, what happens to
the inertia?
A 10,000kg truck is traveling at +20m/s....
On a touchdown attempt, a 95.0 kg running back runs toward the end zone at 3.75 m/s. A 111-kg linebacker moving at 4.10 m/s meets the runner in a head-on collision. If the two players stick together. (a) What kind of collision is it and what quantity is conserved in this problem? (0.5 point) (b) Write down the appropriate conservation equation for the system. (0.5 points) (c) Find the final velocity vf. (both magnitude and direction) (0.5 points) (d) Calculate...
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