A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. (a) How long does it take the ball to reach the maximum height? (b) What is the maximum height reached by the ball? (c) What is its speed after 4.2 s?
What will be an ideal response?
(a) 3.1 s (b) 46 m (c) 11 m/s
You might also like to view...
If a ship has a mass of 10 million kilograms, what volume of fresh water must it displace in order to float? The density of water is 1000 kg/m3
A) 1010 m3 B) 1012 m3 C) 104 m3 D) 107 m3 E) 108 m3
An object moves 10 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object?
a. + b. ? c. 0 (no sign) d. any of the above
Four equal positive charges are placed at the corners of a square. The force on a +1 C charge placed at the center due to any single charge is 10 N. The value of the electric field at the center due to the charges at the corners is ________ N/C.
Fill in the blank(s) with the appropriate word(s).
It was the Chinese who provided critical ancient data on supernovae and comets
Indicate whether the statement is true or false