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Q. A car speeds past a stationary police officer while travelling 115km/h. The officer immediately begins pursuit at a constant acceleration of 10.20 km/h/s (note the mixed units), just as the driver passes the officer.
(a) How much time would it take for the police officer to catch up to the speeding car, assuming that the car maintains a constant speed?
(b) How fast would the police officer be travelling at the time he catches up to the driver?
Two particles of masses m and 3.00m are moving toward each other along the x-axis with the same speed v. They undergo a head on elastic collision and rebound along the x- axis. Find out the final speed of the heavier object.
A 0.12-kg ball is placed in a shallow wedge with an opening angle of 120°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless. Find contact force o..
Find out the sum of these four vector forces: 12N to the right at 35.0° above the horizontal, 31.0 N to the left at 51.5° above the horizontal, 7.45N to the left at 35.0° below the horizontal, and 24N to the right at 48.0° below the horizontal.
Calculate each star's speed, and state whether it is moving toward or away from us.
A car is parked on a steep incline, making an angle of 37.0° below the horizontal and overlooking the ocean, when its brakes fail and it begins to roll. Starting from rest at t = 0, the car rolls down the incline with a constant acceleration of 3...
A plane leaves the airport in Galisto and flies 175 km at 68.0^circ east of north and next changes direction to fly 260 km at 48.0^circ south of east, after which it makes an immediate emergency landing in the pasture.
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
What is magnitude of the force that a concrete support exerts on the bridge at each end. The cloth exerts a friction force of 0.100 N on the mug and the cloth is pulled with a constant acceleration of 3.00 m/s.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Estimate the position of C.G or fulcrum & the masses of persons on a 16 feett sea saw, under balanced condition.
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
A child goes down a playground slide with an acceleration of 1.20 m/s2. Compute the coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 32.2° below the horizontal.
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