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Solve the all parts of given question:
Question: The 100-m dash can be run by the best sprinters in 10.0 s. A 70-kg sprinter accelerates uniformly for the first 45mm to reach top speed, which he maintains for the remaining 55mm.
Part A: What is the average horizontal component of force exerted on his feet by the ground during acceleration?
Part B: What is the speed of the sprinter over the last 55m of the race (i.e., his top speed)?
I want help to determine the average horizontal component of force exerted on his feet by the ground during acceleration.
The driver of the compact car suddenly applies the brakes hard for 2.0sec. Determine what is the change in momentum; that is, the direction and magnitude of the impulse, on the car
A bicycle with 0.80 meter diameter tires is coasting on a level road at 5.6 m/s. A small blue dot has been painted on the tread of the rear tire. Find the speed of the blue dot when it is 0.80 meter above the road
Point A is located 0.259 m away from a charge of -2.11 x 10-9 C. Point B is located 0.487 m away from the charge. What is the electric potential difference VB - VA between these two points.
A charged oil drop that has a mass of 5.40 x 10^-12 kg and carries 10 elementary charges is centered 50 mm below the center of an oppositely charged sphere that has a radius of 5.0 mm.
A tiny ball (mass = 0.0092 kg) carries a charge of -24C. What is the electric field magnitude that would cause the ball to float above the ground
A copper kettle contains water at 20.0 °C. When the water is heated to 91.9 °C, the volume of the kettle expands with 1.26 x 10 -5 m 3. Decide the volume of the kettle at 20.0 °C.
Calculate the magnitude of the gravitational force exerted on a 429-kg satellite that is a distance of 2.91 times earth radii from the center of the earth. What is the magnitude of the earth's acceleration
a component with a 15 ohm resistor is rated for use at power levels not exceeding 1603 mw. how much current can safely
A ceiling fan is turned on and a net torque of 2.2 N · m is applied to the blades. The blades have a total moment of inertia of 0.20 kg · m2
An object is placed 24.5 cm to the left of a thin converging lens that has focal length +12.1 cm. What is the distance between the object and the image
When a 42.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 62.0 A. Wh..
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and p..
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