A 2.0-kg mass is projected from the edge of the top of a 20-m tall building with a velocity of 24 m/s at some unknown angle above the horizontal. Disregard air resistance and assume the ground is level. What is the kinetic energy of the mass just before it strikes the ground?
a. 0.18 kJ
b. 0.97 kJ
c. 0.89 kJ
d. 0.26 kJ
e. 0.40 kJ
B
You might also like to view...
The thermoplastic polymer with the highest melting point is _________.
Fill in the blank(s) with the appropriate word(s).
What is the angular speed in rad/s of the minute hand of a clock?
What will be an ideal response?
A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 25.0° with a speed of 30.0 m/s. The coefficient of static friction between the car and the road is 0.300
What is the force exerted by friction on the car? A) 1590 N B) 3430 N C) 7240 N D) 7820 N E) 795 N
Simple harmonic oscillations can be modeled by the projection of circular motion at constant angular velocity onto a diameter of the circle. When this is done, the analog along the diameter of the acceleration of the particle executing simple harmonic motion is
A. the displacement from the center of the diameter of the projection of the position of the particle on the circle. B. the projection along the diameter of the velocity of the particle on the circle. C. the projection along the diameter of tangential acceleration of the particle on the circle. D. the projection along the diameter of centripetal acceleration of the particle on the circle. E. meaningful only when the particle moving in the circle also has a non-zero tangential acceleration.