Kinetic energy is definitely conserved
Indicate whether the statement is true or false
F
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A 550-g mass traveling at 8.0 m/s undergoes a head-on elastic collision with a 250-g mass traveling toward it also at 8.0 m/s. What is the speed of the 250-g mass after the collision?
A) 15 m/s B) 8.0 m/s C) 4.0 m/s D) 14 m/s E) 0 m/s
Projectile Motion: A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the horizontal distance to the point where the football hits the ground if we neglect air resistance?
A. 20 m B. 35 m C. 18 m D. 60 m E. 30.0 m
Light spreads out when it passes through a narrow slit because of
a. interference b. diffraction c. specular reflection d. diffuse reflection e. polarization
The units T•m2/s are equivalent to:
a. V. c. W. b. N/m. d. webers.