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Question: A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by vx(t)=(0.950m/s3)t2.
Part A: What is the acceleration of the car when vx = 12.0m/s?
Please help for the above question, completely confused!! Show each steps if possible, Thanks.
A woman walks 290 m in the direction 37° east of north, then 177 m directly east. Find (a) the magnitude and (b) the angle (from due east) of her final displacement from the starting point. (c) Find the distance she walks.
The density of petrol is 730 kg/m^3 at 0 degrees C. Its average coefficient of expansion is 9.60 * 10^-4 degrees C. Assuming you have a 45 litre full tank, how many extra grams of petrol would you get
A painter wishes to know whether or not he can safely stand on aladder. Calculate the maximum mass of the painter for which the ladder willremain stable when he climbs a distance d = 5.2 m up the ladder
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A 36 kg girl and a 7.9 kg sled are on the frictionless ice of a frozen lake, 20 m apart but connected by a rope of negligible mass. How far from the girl's initial position do they meet
A long thin steel rod is 500.00 centimeter long at 0oC. When exposed to the summer sun, its temperature is raised to 33oC. Evaluate the length of the rod at the higher temperature
The length of a spring increases by 6.7 centimeter from its relaxed length when a mass of 1.5 kilogram is hanging in equilibrium from the spring. Obtain how much elastic potential energy is stored in the spring
A 0.0400 kg golf ball initially at rest is given aspeed of 35.0 m/s when a club strikes.If the club and ball are in contact for 2.00 ms, what average force acts on the ball
q1. three equal point charges each with a charge of 1.90 mu c are placed at the corners of an equilateral triangle
A bicycle rider pushes a bicycle that has a mass of 13kg up a steep hill. The incline is 25 degrees and the road is 275m long. The rider pushes the bike parallel to the road by a force of 25N. How much work does the rider do on the bike?
neglect air resistance during the descent. she comes to rest 3 m under the surface of the water. Find out the average force that the water exerts on the diver
When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been free from rest.
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