A Moving to the next question prevents changes to this answer. Question 1 of 3 Question 1 3 points Save Answ A 1.5 kg projectile is fired from ground level with kinetic energy Ko-200 J at an angle 30° above the horizontal. If at the maximum height reached by the projectile its kinetic energy K=140J. Approximately, what is the maximum height (in m) reached by the projectile? (Take g= 9.8 m/s2) O A. 7 O B. 4 O C. 5 O D. 6 O E. 3 Question A Moving to the next question prevents changes to this answer. Close Win

A huge cruiser with a mass of 6.50x107 kg has a velocity of 12 m/s in a instant. A. What is the kinetic energy of the spacecraft at this time? B. How much work does it take to stop it? C. What is the magnitude of the constant force to stop it, if it has a 2.5 kilometer displacement?

Next O Post Test: Energy and Momektum Select the correct answer. A 25 newton force applied on an object moves It 50 meters. The angle between the force and displacement Is 40.0°. What Is the value of work belng done on the object? O A. O Joules OB. 9.6 x 102 Joules OC. 1.2x 10 joules OD. -9.6 x 102 Joules O E. -1.2 x 103 Joules Reset Next ghts reserved. 24 % & 4 7 8. y f

A daredevil on a motorcycle leaves the end of a ramp with a speed of 33.2 m/s as in the figure below. If his speed is 31.0 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. m A daredevil on a motorcyle is at the end of a ramp that is sloped up to the right. An arrow parallel to the ramp's surface is above the daredevil. A dotted-line path traces the trajectory of the daredevil. The path extends up to the right, initially parallel to the surface of the ramp, and decreases in slope until it reaches a maximum, whereupon it extends down to the right with increasing slope magnitude. The vertical distance between the maximum and the highest point of the ramp is h. A horizontal arrow points to the right above the maximum.

A 61.5-kg hiker starts at an elevation of 1200 m and climbs to the top of a peak 2750 m high. Part A What is the hiker's change in potential energy? Express your answer to three significant figures and include the appropriate units. ΔΡΕς = Submit Part B W min = Submit Part C What is the minimum work required of the hiker? Express your answer to three significant figures and include the appropriate units. O Yes O No Value Submit μA Request Answer ī μÅ Value Request Answer Units Can the actual work done be greater than this? Request Answer Units ? ?

The nickel's image in the figure below has thrice the diameter of the nickel when the lens is 2.62 cm from the nickel. Determine the focal length of the lens (in cm).

i just need help with C and D A big ship with a mass of 5.95 x 10 7 kg has a speed of 11.0 m/s at some instant. A. What is the ship’s kinetic energy?   B. How much work is required to stop it?   C. How is work related to the mechanical energy?   D. What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.75 km?

A 62.6 kg runner has a speed of 5.30 m/s at one instant during a long-distance event. HINT What is the runner's kinetic energy at this instant (in J)? J (b) How much net work (in J) is required to triple his speed? J

You push your physics book 2.40 m along a horizontal tabletop with a horizontal push of 3.00 N while the opposing force of friction is 0.700 N. a. How much work does your 3.00 N push do on the book? b. How much work does the normal force from the table do on the book? c.

I need help with 2a and 2b