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From the top of a 70 m building, you throw a ball straight up at 6 m/s. The ball misses the building on the way down.
1. What is the maximum height of the ball?
2. What is the velocity of the ball after 2 s?
3. What is the final velocity of the ball (just before it hits the ground?)
Now, the ball is thrown straight down at 6 m/s. What is the velocity of the ball after 2 s?
Using the initial velocity from part d, now what is the final velocity of the ball (just before it hits the ground)?
A sphere is spinning with a constant angular velocity. A 371 N force is applied at the axis of rotation. A rotating body has an angular acceleration of 9rad/s 2. A 3175 N force is applied 6 cm from the axis of rotation and is parallel to the lever ..
A Heavy rainstorm dumps 1.0 cm of rain on a city five km wide and 8 km long in a two hr period. How many metric tons (1metric ton = 10^3 kg) of water fell on the city? [1cm^3 of water has a mass of 1 gram=10^-3.] How many gallons of water was this?
The mean lifetime of muons in their rest frame is 2.20 ?s. Now consider a muon traveling through the Earth's atmosphere at a speed of 0.999 c. What is the mean distance traveled before it decays?
A billiard ball moving at 5.30 m/s strikes a stationary ball of the same mass. Find the velocity (magnitude and direction) of the second ball after collision
An athlete executing a long jump leaves the ground at a 35.0? angle and travels 7.90m, If this speed were increased by just 5.0%, how much longer would the jump be
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An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 13,500 J of energy is added to the rod by heat, what is the change in length of the rod
If a blue filter is placed over a light source aperture so that the incident rays are blue and these rays pass through a green filter, what color should the reflected rays be? Based on these observations, what makes the green filter appear green?
Two events occur in an inertial system at the same time, but 7200 km apart. What is the time difference between the two events
An energy-efficient lightbulb, taking in 23.0 W of power, can produce the same level of brightness as a conventional bulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10,000 h and its purchase price is $17.00, whereas the..
A 9200 kg boxcar traveling at 18 m/s strikes a second boxcar at rest. The two sticktogether and move off with a speed of 12m/s. What is the mass of the second car
Two protons are maintained at a separation of 947 nm. Find the magnitude and direction of the electric field there
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