The world-record time for the 100 m dash is approximately 10 s. Given this, is it reasonable to expect Brady to be able to run fast enough to achieve Brady's leap? What maximum horizontal range could the dolphin achieve?

A student stands at the edge of a cliff and throws a stone over the edge at an angle 0 above the horizontal. Ignoring the effects of air resistance, which of the following statements must be true? (There may be more than one correct answer). A plot of the horizontal position x vs. time t will have a constant and positive slope The horizontal range of the stone equals vo2sin(20)/g There is no point in the stone's motion in which the stone's speed matches its initial speed. A plot of the vertical velocity component vy vs. time t will have a constant and negative slope When the stone reaches its maximum height, its velocity will be zero

This problem requires a second answer, as demonstrated by this error when I attempt to submit my answer: "Your submission doesn't have the correct number of answers. Answers should be separated with a comma." Please help me find this elusive second answer.

A missile silo is used to launch military rockets vertically upward out of the silo, giving the rocket an initial speed of 79.6 m/s at ground level. As the rocket clears the silo, the engines fire, and the rocket accelerates upward at 3.90 m/s2 until it reaches an altitude of 1,080 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s². (You will need to consider the motion while the engine is operating and the free-fall motion separately. Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) (a) Determine the velocity of the rocket (in m/s) at the end of the engine burn time and also the burn time (in s). (For the velocity, indicate the direction with the sign of your answer.) velocity at end of engine V = 92.22 Check your kinematic equation relating vo, V1, ay, and AYo → 1 (where velocity of rocket as it clears the silo, v, = velocity of the rocket at…