If a ball is thrown straight up into the air with an initial velocity of 65 ft/s, its height in feet after t seconds is given by f(t)=65t−16t2 find the average velocity for the time period beginning when t=2 and lasting (i) 0.5 seconds 61.5 (ii) 0.1 seconds 65.74 (iii) 0.01 seconds 65.98 (iii) 0.001 seconds 65.99 based on the above results, guess what the instantaneous velocity of the ball is when t=2.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.