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A driver in a moving car applies the brakes. The car slows to a final speed of 1.80 m/s over a distance of 40.0 m and a time interval of 8.30 s. The acceleration while braking is approximately constant.
What is the car's original speed before braking?
What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.)
A shopper in a supermarket pushes a cart with a force of 35.0 N directed at an angle of 25.0° downward from the horizontal. Find the work done by the shopper on the cart as he moves down an aisle 50.0 m long
you have a 7.70 uf capacitor a 1250 resistor who are connected in series to a generator operating at 50 hz producing an
Two plane mirrors M1 and M2 are parallel to each other with M2 on the right of M1. The mirrors are 30 cm apart. A pin is placed between the mirrors 7.5 cm from M2. Calculate the distance of the second image from each mirror.
A cart starts from rest at the top of the tilted track. Assume the track is frictionless. The cart passes photogate A moving at speed 5.41 cm/s, Find the magnitude of the acceleration of the cart
A power station uses 100 kV to deliver power to a building. The building has a total resistance of 12.5kV. How much power is delivered to the building
A wire has a length of 6.80 10-2 m and is used to make a circular coil of one turn. evaluate the maximum torque that this coil can experience
Dez pours a liquid (n = 1.43) into a container made of glass (n = 1.51). Find the angle of the corresponding refracted ray
Find the speed of a satellite moving in a circular orbit just above the surface of Mars. Mars has a radius of 3.40 106 m and a mass of 6.42 1023 kg
Two soccer players start from rest, 30 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
A projectile is launched from a 300 m high cliff at an angle of 30? with an initial velocity of 150 m/s. (g=9.8m/s2). calculate the Direction of the velocity on impact
A factory worker moves a 26.0kg crate a distance of 5.20malong a level floor at constant velocity by pushing horizontally onit. What is the net work done on the crate
There are four charges, each with a magnitude of 1.8 μC.Two are positive and two are negative. The charges are fixedat corners of a 0.25 m square, one to a corner, in such a way thatthe net force on any charge is directed toward the center of thes..
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