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Q. A 1500 -kg automobile travels at a speed of 75 -km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop.
(1) What would be the car's stopping distance for dry pavement (µ = 0.85)?
(2) What would be the car's stopping distance for wet pavement (µ = 0.60)?
A bomb is dropped from an airplane in level flight at a speed of 970 km/h. The altitude of the aircraft is 2000 m. At what horizontal distance from the initial position of the aircraft will the bomb land.
An LR circuit is hooked up to a battery as shown in the figure, with the switch initially open. The resistance in the circuit is R=120Ω, the inductance is L=4.10H, and the battery maintains a voltage of E=49V. At time t=0 the switch is closed.
A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes time 0.420s to pass this window, which is of height 1.92 m. How far is the top of the window below the windowsill from which the flowerpot ..
A 65Kg ice skater pushes off his partner and accelerates backwards at 1.3m/s^2. If the partner accelerates in the opposite direction at 2.0m/s^2, what is mass of the other skater.
Clouds in the tropics tend to move from east to west. Consequently, which rhyme best explains a rainbow seen in the tropics.
If the car is now at rest and the pendulum undergoes S.H.M. would its time be shorter of longer than that calculated in (b) explain your answer.
A glass windowpane in a home is 0.62cm thick and has dimensions of 0.9m multiplied by 1.6 m. On a certain day, the indoor temperature is 20 °C and the outdoor temperature is 0 °C.
A 1 Kg mass on a 37 degree incline is connected to a 3 kg mass on a horizontal surface. The coefficient of kinetic friction between all surfaces is 0.10 and the pulley is frictionless and applied force is F=12N.
A hockey puck is sliding across a frozen pond with an initial speed of 9.7 ms. It comes to rest after sliding a distance of 44.0 m. What is the coefficient of kinetic friction between puck and ice.
What are (a) x component and (b) y component of a vector in the xy plane if its direction is 329° counter clockwise from the positive direction of the x axis and its magnitude is 9.0 m.
A crate of 30.2- tools rests on a horizontal floor. You exert a regularly increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 319. After that you must reduce your push to 227 to keep it moving at a..
A 5 g bullet with an initial velocity of 95 m/s lodges in a block of wood and comes to rest at a distance of 6 cm. assume the bullet undergoes a constant negative acceleration; it slows at a constant rate. How much time does it take for bullet to ..
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