A bolt drops from the ceiling of a train car that is accelerating northward at a rate of 2.05 m/s2. (a) What is the acceleration of the bolt relative to the train car? m/s at to the Select- from the vertical (b) What is the acceleration of the bolt relative to the Earth? m/s-Select
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- A football is kicked with an initial velocity of 50 m/s at an angle of 45-degrees with the horizontal. Determine the time of flight? g= 10 m/s2A ball is tossed at an angle. It moves in an arc, reaches its highest point, and then falls in an arc back to the ground. During the ball's flight, what can be said about the direction of the acceleration?A bullet is fired horizontally with an initial velocity of 800 m/s at a target located 350 m from the rifle. How much time is required for the bullet to reach the target? The time required for the bullet to reach the target is ___s.
- A quarterback can run with a speed of vq = 15 mph. He throws a ball with a speed of vb = 35 mph at some unknown angle θ between 30 and 60 degrees, which is measured from horizontal. Neglect air resistance. - a reciever runs past the quarteback ( just beside him) at speed vq. If the quarterback releases his pass at that instant what would be the angle in degrees that he would have to throw the ball for the reciever to catch it?If a ball is thrown in the air at an initial velocity of 70 m/s, the initial velocity of the ball is The acceleration of the ball at the top of the path is The velocity of the ball at the top of the patis Assume g is rounded to 10 m/s^2A cricketer throws a ball into the air in vertical motion with an initial speed of 40m/s. Assume acceleration due to gravity is 10m/s2. a) Determine the total upward distance the ball travelled assuming there is no air resistance. b) If the ball travels a total upward distance of 75m with air resistance, determine the additional deceleration due to the air resistance acting on the ball.
- two car with a distance of 100m between them are moving in the same direction with the same speed. At t=0 s , the cars start to apply constant acceleration with the same magnitude but in opposite directions, simultaneously. at the 5th second, the cars are the same position, and one of the cars is stopping. calculate the velocity of the moving car at the 5th second. (ıf you use g ; take g = 10m/s2)22 - A marble is thrown upwards from the ground. Since the +y axis is selected in the upward direction, regarding this ball,I. Its acceleration is +g while going up.II. Its acceleration at maximum height is zero.III. Its acceleration during motion is -g.Which of the statements are true? a)I and II B)II and III NS)only III D)only II TO)only IA hot-air balloon is rising upward with a constant speed of 3.500m/s. When the balloon is 14m above the ground, the balloonist accidentally drops an object over the side of the balloon. Determine the time (in sec) elapsed before the object hits the ground.
- Apollo astronauts took a “nine iron” to the Moon and hit a golf ball about 180 m. Assuming that the swing, launch angle, and so on, were the same as on Earth where the same astronaut could hit it only 32 m, estimate the acceleration due to gravity on the surface of the Moon. (We neglect air resistance in both cases, but on the Moon there is none.)You throw a ball from the balcony onto a basketball court. You release the ball at a height of 7 m with an initial velocity of 9 m/s 33 degrees above the horizontal. A friend is on the court 11 m from the point directly below you. She waits for a period of time then begins to move directly away from you at an acceleration of 1.8 m/s2. If you throw the ball in line with her, how long must she wait so that she can catch the ball at exactly 1 m above the floor of the court?A 480g falcon can reach high speeds near the ground after vertically diving from heights approaching 200m after starting with a zero (vertical) speed. Calculate such speed after assuming the falcon speeding up under the influence of gravity only. Answer a) 0.00m/sAnswer b) 62.6m/sAnswer c) 75.0m/sAnswer d) 200m/s