Here ,
Using second law of motion
net force acting = mass * acceleration
as the boats move with constant speed , acceleration = 0
net force acting = 0 *mass
net force acting = 0 N
hence , the net force acting on speedboat A is equal to net force acting on speedboat B.
as the acceleration of both boats is zero
Two speedboats are moving at constant speeds on a straight stretch of a racecourse. At the...
mA >mg [20 points) Two carts are moving on a level frictionless table as shown in the overhead view diagram at right. At the instant the carts pass the dashed line on the right, their kinetic energies are the same. The mass of cart A is greater than the mass of cart B. direction of initial velocities A. [3 pts] Is the initial speed of cart B greater than, less than, or equal to the initial speed of cart A?...
[20 points] Two carts are moving on a level frictionless table as shown in the overhead view diagram at right. At the instant the carts pass the dashed line on the right, their kinetic energies are the same. The mass of cart A is greater than the mass of cart B mA mB A A. [3 pts] Is the initial speed of cart B greater than, less than, or equal to the initial speed of cart A? Explain your reasoning...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
A cat is in a box, being pulled in a straight line at a constant speed. Which of the following statements is true about the net force acting on the cat? A. It is zero. B. It is equal to the cat’s weight. C. It is less than the cat’s weight but greater than zero. D. It is equal to the magnitude of the force of friction.
In Case A, an object is moving in a straight line at a constant speed of 9.8 m/s. In Case B, an object is moving in a straight line with a constant acceleration of 9.8 m/s2. Which of the following statements is true? a. A nonzero net external force acts on the object in neither case. b. A nonzero net external force acts on the object in both cases. c. A nonzero net external force acts on the object in...
kg m/s hits a nomentum of the ball is(5 wall and bounces straight back with the sam B. +4.0 kg-m/s C8.0kgm/s. Questions 2, 3; A 6.0 kg object moving north at a speed of 3.0 m/s, collides with a 4.0kg objot moving sous D.-8.0kgm/s Enone of the with speed of 6.0 m/s. On collision, the two objects stick togetber and move s one cbject 2. The magnitude of the sum of the linear momentum of the two objects just aher...
Please explain to me in detail
1. A moving truck has momentum. If it moves four times as fast, its momentum is as much. 2. Two carts, one three times as heavy as the other, move down a hill at the same speed. Compared to the lighter cart, the momentum of the heavier cart is as much. 3. A bus is traveling at highway speeds when the momentum of an unlucky bug is suddenly changed as it splatters into the...
Joe, standing near a straight road, records the sound of the
horn of a car traveling at a constant speed. The recorded frequency
as a function of the car's position along the road for trials at
different car speeds is accurately graphed below.
Greater than Less than Equal to When the car is far
away, the average of the frequencies moving in and out is ..... the
frequency at rest.
Greater than Less than Equal to The distance of Joe from
the...
A 44.0 kgkg parachutist is moving straight downward with a speed of 3.90 m/s If the parachutist comes to rest with constant acceleration over a distance of 0.850 mm , what force does the ground exert on her? If the parachutist comes to rest over a shorter distance, is the force exerted by the ground greater than, less than, or the same as in part A? Explain..
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