A ball is thrown at an angle of 25° above the horizontal and it reaches a maximum height of 2.9 m. a.) What is the vertical component of the ball's initial velocity? b.) What is the magnitude of the ball's initial velocity?

student throws a heavy red ball horizontally from a balcony of a tall building with aninitial speed v0. At the same time, a second student throws a lighter blue ball horizontally fromthe same balcony with an initial speed v0 /2. Ignoring air resistance, which of the followingstatements must be true?a. The red ball hits the ground with the greater speed.b. Both balls hit the ground with the same vertical velocity component.c. Both balls hit the ground with the same angle of impactd. The balls reach the ground at the same instant.     More than one of the statements can be true.

A soccer player kicks a ball with an initial velocity of 10 meters per second at an angle of 30 degrees above the horizontal. The magnitude of the horizontal component of the ball's velocity is Select one: O a. 10 m/s O b. 8.7 m/s O c. 5.0 m/s O d. 9.8 m/s

If the stone had been thrown from the clifftop with the same initial speed and the same angle, but above the horizontal, then compare their impact velocities.  a)The impact velocity when throwing a stone above horizontal will be more than the case when throwing a stone below horizontal. b The impact velocities of the two situations will be the same.  c More information is needed to conclude the relative strength of impact velocities. d).The impact velocity when throwing a stone above horizontal will be less than the case when throwing a stone below horizontal.  which option is correct

A river flows due south with a speed of 2.8 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.9 m/s due east. The river is 600 mm wide. a-What is the magnitude of his velocity relative to the earth? b-What is the direction of his velocity relative to the earth? c-How much time is required to cross the river? d-How far south of his starting point will he reach the opposite bank?

A person standing 20.0 meters away from a  wall throws a stone from the ground level  at an angle of 60.0°above the horizontal with an initial speed of 25.0 m/s. The time it takes the stone to reach the wall and the   height at which the stone strikes the wall are: a.) t = 1.4 s,  y = 18.6 m b.) t=2.6s, y=11.5m c.) t = 1.6 s,  y = 22.1 m d.) t=6.8s, y=34.2m

Estimate the thickness of the Earth's atmosphere. From your chemistry class, you know that the most common speed of a nitrogen molecule is 700 m/s. The molecules' velocity is pointed along random directions, but some molecules head straight up; i.e. directly away from the Earth's center. Consider the thickness of the atmosphere as the highest point that such a nitrogen molecule can fly to, if it goes straight up. What is the altitude? m

A baseball player hits a ball 1.1m above the plate at an angle of 42 degrees at a speed of 35 m/s. In order to hit a home run, the ball has to clear a 2.4 m tall wall, 120 m away from the plate.  a) sketch the situation, including a coordinate system and the ball's trajectory.  b)how many seconds is the ball in the air, which it reaches the wall?  c) does the ball go over the wall for a home run? (find its vertical position at the appropriate time)  d) what is the ball's speed and direction, as it reaches the wall?