A17926-lb truck enters an emergency exit ramp at a speed of 75.6 ft/s. it travels for 6.4 s before its speed is reduced to 30.3 ft/s. determine the braking force by the truck if the acceleration is constant. (use impulse-momentum concepts.) assume theta = 21.4 degrees

The experiments with static charges were done by:

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87