1. An electron has a constant acceleration of +3.2m/s2. At a certain instant its velocity is...
A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 4.0 s later is x = - 30 cm. What is the acceleration of the particle? Select one: A. 5.0 cm/s2 B. 15 cm/s2 O C. 10 cm/s2 D. - 15 cm/s2 O E. - 5.0 cm/s2
A flywheel has a constant angular acceleration of −0.89 rad/s2. What is its angular velocity 18 s after its angular velocity is 4.4 rad/s?
A motorcycle has a constant acceleration of 4.45 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a)31.0 to 41.0 m/s, and (b)61.0 to 71.0 m/s?
1. At a certain instant, cylinder A has a downward velocity of 0.8 m/s and an upward acceleration of 2 m/s. Determine the corresponding velocity and acceleration of cylinder B.
An electron has an initial velocity of (12.0j + 14.0k) km/s and a constant acceleration of (1.80×1012m/s2)i in a region in which uniform electric and magnetic fields are present. If B =(400μT)i, find the electric field E. a) Ex? b) Ey? c) Ez?
At a given instant the top end A of the bar has the velocity and acceleration shown in the figure. At the instant shown, determine: The velocity of point B. vB_______ cm/s (A. -5.00 B. 7.00 C. 8.66 D. 5.00 E. None) The angular velocity of the bar, OAB_______ rad/s (A.-1.0 B. 1.0 C.5.0 D.3.2 E. None) The acceleration of point B. aB_______ cm/s2 (A. -7.88 B. 7.88 C.-8.66 D8.66 E. None) The angular acceleration of the bar, αAB=_______ rad/s2 (A. 0.33 B. 3.30...
2U 2/208 At a certain instant, the velocity of cylinder B is 1.2 m/s down and its acceleration is 2 m/s2 up. Determine the corresponding velocity and accelera- tion of block A. Problem 2/208
An electron has an initial velocity of (10.0j + 12.0k) km/s and a constant acceleration of (1.70×1012m/s2)i in a region in which uniform electric and magnetic fields are present. If B =(400μT)i, find the electric field E. Ex? Tries 0/20 Ey? Tries 0/20 Ez? Tries 0/20
At a certain instant of time an an automobile is rounding a curve. Its acceleration in its direction of motion is 2.97 m/s 2 and its centripetal acceleration is 3.861 m/s 2 . What is the angle that the total acceleration makes at that instant with respect to the direction of motion at that instant? Answer in units of ? .
The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.1 s. Question 4 Your answer is partially correct. Try again The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of...