Q: if the book fals of the shelf, what will be its speed when it hits the ground.
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A: The given data are listed below with appropriate variables. Here, F denotes the force, x denotes…
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A: What happens to the potential energy of a body when it is brought down.
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A: When does an object transform from kinetic to potential energy? Explain:- kinetic energy:-…
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Q: Stretched spring is only one of many forms of kinetic energy. True O False
A: According to question we need to find that the given statement is true or false.
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A: (given) Weight (mg) of an object = 10 N Thus, the mass of the body is, m=Wg=10 N10 m.s-2=1 kg…
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A: Given data The mass of the quarterback is given as mq = 85 kg.T The velocity of the quarterback is…
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Q: What will happens to the kinetic energy if the bullet's mass is quadrupled while its velocity is…
A: Let K be the initial kinetic energy of bullet. Then K = 1/2 m v2 No according to question the mass…
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A: natural length = 10 inch elongation = 1.5 inch weight = 8 punds
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A: Given Data: The mass of first marble is, m1=m The mass of the second marble is, m2=2m The dropping…
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A: Given: Object has kinetic energy, the kinetic energy of the object is not equals to zero.
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A: Write the expression for the kinetic energy of an object.
Q: The unit of the Kinetic Energy is
A: Option b
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A: As we know, kinetic energy is the energy an object has because of its motion.If we want to…
Q: if the book falls off the shelf, what will be its speed when it hits the ground.
A:
Q: A ball is dropped in a vacuum (no air resistance). As it falls it loses 7 J of potential energy. How…
A: Since there is no air resistance, mechanical energy is conserved.
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Q: The potential energy of a freely falling object decreases progressively. Does this violate the law…
A: No. The process does not violate the law of conservation of energy. This is because when the body…
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A: Power is a scalar quantity. A quantity which depends on direction a vector quantity. A quantity…
Q: Is kinetic energy a scalar quantity?
A: Kinetic energy is the energy possessed by the object due to its motion.
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A: Potential energy is defined as energy possessed by a body due to its position in this surrounding.…
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A: Given- Power P= 100 hp=74600 W Force F= 300N
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A: Kinetic energy convert into potential energy (upward motion)\
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A: Find the work done by the force.
Q: What is the work done by tension on the pendulum bob as swings from left to right?
A: work done by tension on the pendulum bob as the pendulum swings from left to right
Q: A woman weighing 600 N steps on a bathroom scale that contains a stiff spring. In equilibrium, the…
A: the total work done on it during the compression is 3 joule
Q: The fastball of a famous pitcher in the National League has been clocked in excess of 95 mph.…
A: Velocity,(v)=95 mph=95 x 0.445 m/sec=42.27 m/sec -----(1) [Given] [Using 1 mph=0.445 m/sec] Mass…
Q: The energy associated with motion is called A) Potential energy B) Kinetic energy C) Both A &…
A: The energy associated to the motion of the body is called kinetic energy. The formula of kinetic…
Q: A raised hammer possesses A) Kinetic energy B) Mechanical energy C) Muscular energy D) Potential…
A: The energy possessed by virtue of the position or the configuration of the body is called potential…
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- A 100-g firecracker is launched vertically into the air and explodes into two pieces at the peak of its trajectory. If a 72-g piece is projected horizontally to the left at 20 m/s, what is the speed and direction of the other piece?A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight car. If the speed of the loaded freight car must not go below 3.0 m/s, what is the maximum mass of grain that it can accept?What exhaust speed is required to accelerate a rocket in deep space from 800 m/s to 1000 m/s in 5.0 s if the total rocket mass is 1200 kg and the rocket only has 50 kg of fuel left?
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- In an elastic collision, a 400-kg bumper car collides directly from behind with a second, identical bumper car that is traveling in the same direction. The initial speed of the leading bumper car is 5.60 m/s and that of the trailing car is 6.00 m/s. Assuming that the mass of the drivers is much, much less than that of the bumper cars, what are their final speeds?Two figure skaters are coasting in the same direction, with the leading skater moving at 5.5 m/s and the trailing skating moving at 6.2 m/s. When the trailing skater catches up with the leading skater, he picks her up without applying any horizontal forces on his skates. If the trailing skater is 50 heavier than the 50-kg leading skater, what is their speed after he picks her up?A tennis ball of mass 57.0 g is held just above a basketball of mass 590 g. With their centers vertically aligned, both balls are released from rest at the same time, falling through a distance of 1.20 m, as shown in Figure P6.45. (a) Find the magnitude of the basketballs velocity the instant before the basketball reaches the ground. (b) Assume that an elastic collision with the ground instantaneously reverses the velocity of the basketball so that it collides with the tennis ball just above it. To what height does the tennis ball rebound? Figure P6.45
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