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You are driving down the road when you see a deer in your headlights. It takes you 0.5 seconds to react. Once you react you start braking, and you decelerate at 3m/s2. The skid marks on the road are 120 meters long, and you somehow manage to stop just before hitting the deer (so Bambi's mother gets away safely).
What was your speed before you hit the brakes?
A child is twirling a 0.0224-kg ball on a string in a horizontal circle whose radius is 0.104 m. The ball travels once around the circle in 0.350 s. Determine the centripetal force acting on the ball
What is the average speed in m/s of nitrous oxide molecule when the temp is 300K? The molar mass of oxygen is 0.032 kg/mol
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 2.36 m/s. What is the height of the hill
A satellite has a mass of 102 kg and is located at 2.02 106 m above the surface of Earth. find the magnitude of the gravitational force on the satellite
Electrons are accelerated by a potential and directed upon a thin salt crystal that has inter-atomic spacing of 0.282 cm. What was the acceleration potential
It takes the Earth 24 hours to make a complete rotation around its axis. What is the angular velocity of the Earth in rad/s
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
A barbell consists of two small balls, each with mass 600 grams (0.6 kg), at the ends of a very low mass rod of length d = 20 cm (0.2 m). The center of the barbell is mounted on the end of a low mass rigid rod of length b = 0.3 m, and this rod rot..
calculate the speed of sound and uncertainty of the speed of sound for a lab report. The equation for the speed of sound is V=4LS
A 2.50×106 ? resistor and a 2.00 ?F capacitor are connected in series with an ideal battery of 5.00 V. How much energy was provided by the battery
A 2.4mm -diameter sphere is charged to -4.5nC . An electron fired directly at the sphere from far away comes to within 0.32mm of the surface of the target before being reflected. What was the electron's initial speed
A 63kg person rides in a 30kg cart moving at 14m/s at the top of a hill that is in the shape of an arc of a circle with a radius of 30m. What is the apparent weight of the person as the cart passes over the top of the hill
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