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An object moves with constant acceleration 5.00 m/s2 and over a time interval reaches a final velocity of 11.2 m/s. (a) If its initial velocity is 5.6 m/s, what is its displacement during the time interval? m (b) What is the distance it travels during this interval? m (c) If its initial velocity is ?5.6 m/s, what is its displacement during the time interval? m (d) What is the total distance it travels during the interval in part (c)?
If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t. How many seconds does it take for the ball to reach its greatest height, and what is this height.
The person in the middle weighs 190 N, and the tensions in each rope are 200-N. What is the weight of the staging.
A 430g football is lying on the ground, then is kicked and is moving at 25.00 m/s. If the period of the impact was 0.001 s, what was the average force on the ball.
What is the kinetic energy of α particle while it reaches the other plate? The distance between the plates is 33 cm.
On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window.
A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.3 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? m/s
A gauge-12 wire has diameter centimeters and length meters. while the voltage volts is applied to the ends of the wire, the current is amperes. The concentration of free electrons in the wire is per cubic meter.
A hypodermic needle consists of the plunger of circular cross-section that slides inside a hollow cylindrical syringe. When the plunger is pushed, the contents of syringe are forced through a hollow needle.
in what direction must storm now sail to reach. The car is uniformly accelerated during the entire time. What net force is exerted on it.
What is the wavelength of the waves emitted by source? What is the difference in frequency between the directly radiated waves and the waves reflected from a whale traveling straight toward the ship at 4.95 ? Assume that the ship is at rest in the..
A speeding motorist traveling 105km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
A rock of mass 32kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 274N. What is the magnitude of the acceleration of the rock.
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