A drag racer starts from rest and accelerates at 8.0 m/s2 for the entire distance of 300 m. What is the velocity of the race car at the end of the run?
a. 83 m/s
b. 69 m/s
c. 52 m/s
d. 35 m/s
e. 59 m/s
b
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A projectile's vertical velocity component
a. changes most rapidly near the top of its trajectory. b. changes at a constant rate. c. changes most rapidly near the bottom of its trajectory. d. does not change.
A 2.0 kg mass is moving along the x-axis. The potential energy curve as a function of position is shown in the figure. The kinetic energy of the object at the origin is 12 J. The system is conservative, and there is no friction
(a) What will be the kinetic energy at 2.0 m along the +x-axis? (b) What will be the speed of the object at 6.0 m along the +x-axis? What will be an ideal response?
A pressure of 10.0 mm Hg is measured using a constant-volume gas thermometer at a temperature of 50.0°C. What is the pressure (in mm Hg) at the zero-point temperature?
a. 31.8 b. 11.8 c. 8.45 d. 54.6 e. 68.3
On a smooth horizontal floor, an object slides into a spring which is attached to another mass that is initially stationary. When the spring is most compressed, both objects are moving at the same speed
Ignoring friction, what is conserved during this interaction? A) momentum and mechanical energy B) momentum only C) kinetic energy only D) momentum and kinetic energy E) momentum and potential energy