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Q1. The cable supporting a 2125 kg elevator has a maximum strength of 21750 N. What maximum upward acceleration can it give the elevator without it breaking?
Q2. A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
(a) Total vector displacement
m (magnitude) ° south of west
(b) the average speed
(c) the average velocity (magnitude) ° south of west
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...
You are driving home from school steadily at 80 for 150. It then begins to rain and you slow to 50. You arrive home after driving 3 hours and 20 minutes.
A truck travels beneath an airplane that is moving 190 km/h at an angle of 26? to the ground.
An airplane is flying with a velocity of 81.0 m/s at an angle of 24.0^circ above the horizontal. When the plane is a distance 108m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
The minimum stopping distance for a car travelling at a speed of 30 {rm m/s} is 60 {rm m}, including the distance travelled during the driver's reaction time of 0.54 {rm s}.
Polymer diffusion and Calibration of an optical tweezer
Calculate the gradient of V in each region
Consider a large parallel plate capacitor with circular plates of radius R. suppose that the electric field between the plates is increasing.
A basketball star covers 2.6 m horizontally in a jump to dunk the ball. His motion through space can be modelled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02m when he leaves the floor. It reaches a..
A child on a boat throws a 5.40 kg package out horizontally with a speed of 12.0 m/s. determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.5 kg and the mass of boat is 55.5 kg.
A 37-kg girl is bouncing on a trampoline. All through a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 215 J from 430 J. How high does she rise during this interval? Avoid air resistance.
Compute the horizontal distance
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