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Q1. 0.75 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.003 seconds. The block eventually slides at an angle of 22 degrees from its original direction (labelled in the diagram). The overhead view is around to scale. The arrow represents the average force your toe applies briefly to the block of ice.
Q2. A race car can be slowed with a constant acceleration of -14 m/s2.
(a) If the car is going 44 m/s, how many meters will it travel before it stops?
(b) How many meters would it take to stop a car going twice as fast?
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
In a certain RL time constant circuit, it takes 135 msec for the current to reach maximum after the switch is closed.
A bumper car with mass m1 = 116 kg is moving to the right with a velocity of v1 = 5 m/s. A second bumper car with mass m2 = 96 kg is moving to the left with a velocity of v2 = -3.8 m/s. The two cars have an elastic collision. Suppose the surface is f..
Block A of Figure has a velocity of 15 ft/sec down slope. How far will the block slide along the slope? How far will the block slide along the slope before stopping?
A female gymnast weighs 620 N. If she is hanging stationary from a high bar, how many forces are acting on her.
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 22 m. He then makes another 90.0° turn and moves 14 m.
A superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. What is the vertical component of the superhero's displacement.
When the plunger is pushed, contents of the syringe are forced throughout a hollow needle (also of circular cross-If a 4.0 N force is applied to plunger and diameters of the plunger and the needle are 1.20 cm and 2.50 mm, correspondingly, what force ..
What is maximal speed v of the elevator
Find out the tension of the right and left wire
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
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