A ball is dropped from a height of 3 m and rebounds from the floor to a height of 2 m. a) What is the velocity of the ball just as it reaches the floor? b) What is the velocity just as it leaves the floor? c) If it is in contact with the floor for 0.02 s, what are the magnitude and direction of its average acceleration during the interval?

A particle at rest undergoes an acceleration of 2.1 m/s2 to the right and 3.9 m/s2 up. a)What is its speed after 5 s in m/s? b)What is its direction with respect to the horizontal at this time? Answer between −180◦ and +180◦.

From the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s. (a) What is the acceleration (magnitude and direction) of the stone while it moves downward, after leaving the person's hand? magnitude     m/s2

A goalie completes a goal kick with the ball on the ground. The ball has a vertical velocity of 35 m/s and a horizontal velocity of 20 m/s when it leaves the goalie's foot. How long is the soccer ball in the air? Ignore air resistance. A.) 3.57 s B.) 2.04 s C.) 7.14 s

A ball is thrown up with an initial speed of 43.0 m/s a) what is the ball's speed at its highest position? b) how long does it take the ball to reach its highest position? c) what is the magnitude of the ball"s acceleration at its highest position? d) what is the distance between the initial and highest position of the ball? e) what is the ball's speed when it comes back to its initial position?

QUESTION 1 Problem #1: The velocity of a particle moving along the x-axis is given by v(t) = 3t2-12t a) If the particle is at position x=Om at time t=0s, what is the position at any time x(t)? b) What is the displacement of the particle from t=1s to t=4s? c) What is the acceleration of the particle at t=2s? d) What is the average acceleration of the particle from t=1s to t=4s?

Question 8 An object is moving with constant non-zero acceleration along the +x-axis. Describe the shape of the graph of the velocity in the x direction as a function of time for this object. O a horizontal straight line. O a vertical straight line. none of the given choices O a parabolic curve. a straight line making an angle with the time axis.

A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 27m, at which point its engine shuts off and it continues its flight in free fall.a) What is the maximum height attained by the rocket?b) What is the speed of the rocket just before it hits the ground?c) What is the total duration of the rocket's flight?

A scooter begins at rest at t0=0 seconds. The scooters starts moving, and eventually covers a distance d= 651m, in a time tf= 104 seconds. In a coordinate system with north being the positive x-direction, the scooter's motion is in the northern direction. What wa the scooter's average speed, during this time period, in meters per second? What was the scooters displacement in the northern direction during this person, in meters? What was the scooter's average velocity in the northern direction, in this period in meters per second? If the scooter's final velocity at tf was 12 m/s, what was the scooter's average acceleration in the northern direction, during this period in m/s%^2?

6. A stunt man drives a car at a speed of 20 m/sec off a ramp that is 30 m above the ground. The ramp leading up to the take-off point is inclined at 20°. a) What is the time for the upward part of the motion only? b) What is the maximum height of the car relative to the ground? c) How far from the base of the cliff does the car land?