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Bob is driving his car behind Alice's car on a highway. The speed of both cars is 80 km/hr. A moose suddenly appears from the woods and Alice slams her breaks stopping just before hitting the moose. Bob slams his breaks 0.6s after Alice starts breaking. Determine how far Bob should have been driving behind Alice so that he does not hit Alice's car. Assume that the acceleration of both cars is the same.
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
Determine how many conduction electrons are there in a 1.00 millimeter diameter gold wire that is 30 centimeter long
A 0.444 kilogram pendulum bob passes through the lowest part of its path at a speed of 2.12 meter per second. obtain what angle does the cable make with the vertical
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sound
What is the average force provided by a crash pad that stops a 70.0 kg athlete who hits the pad at 10.0 m/s if it takes 1.20 s to stop the athlete?
A truck moving with a speed of 25.4 m/s strikes a parked car. During the collision the truck and car stick together and slide to a stop together. How far does the truck/car combination slide
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.20 m. The mug slides off the counter and strikes the floor 0.60 m from the base of the counter.
A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. What is the distance between the charges
Consider two displacements, one of magnitude 2.9 m and another of magnitude 4.4 m. What angle between the directions of this two displacements
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
A typical adult human lung is about 2.05 liters and is made up of large numbers of small spherical cavities called alveoli. how many avioli are there in the lung
A positive charge of q = 3.5 µC is pulled on by two negative charges. One, -2.0 µC, is 0.050 m to the north and the other, -4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive charge .
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