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A projectile is fired from ground at an angle 60 degrees above horizontal to hit a target on the wall, which is 25.0 m away. The target is 18.0 m above the ground
(a) Find the initial speed of the projectile;
(b) Find the time of flight of the projectile;
(c) Calculate the magnitude and direction of the projectile's velocity at the instant when it hits the target. (Hint: the projectile may not hit the target horizontally)
A weightlifter works out at the gym each day. Part of her routine is to lie on her back and lift a 40 kg barbell straight up from chest height to full arm extension, a distance of 0.51m. How many 400 Calorie donuts can she eat a day to supply that..
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
A block of mass m = 4.2 kg, moving on a frictionless surface with a Vi=2.9m/s speed makes a perfectly elastic collision with a block of mass M at rest. After the collision, the 4.2 block recoils with a speed of 0.9m/s. The mass M is closest to.
An electrical resistor has a voltage drop of 5.00 V when 0.300 A of current flows. At what rate (W) is heat dissipated
as you get closer, you notice that it is GODZILLA!! and he sees you! and begins to come after you!! if you are now moving away at 15 m/s, what is the new frequency you detect from GODZILLA
A jet makes a landing traveling due east with a speed of 115 m/s. If the jet comes to rest in 13.0s, what are the magnitude and direction of its average acceleration.
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
When a guitar string is sounded along with a 441-Hz tuning fork, a beat frequency of 4.00 Hz is heard. When the same string is sounded along with a 437-Hz tuning fork, beat frequency is 8.00 Hz. What is the frequency of the string.
Rubber stopper attached to one end of the string and 100 g mass attached to the other end. A student gets the rubber stopper going in a horizontal circle above her head.
What is the coefficient of kinetic friction
consider a crate at rest on a factory floor. As the pair of workers start to lift it, What happens to the support force acting on the workers feet
Albert is pulling a 25.0 kg block up a hill which has an angle of ï?± = 15.50, calculate the work done by each force listed, and thus find the total work done on the block
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