Afast pitch softball player does a "windmill" pitch, moving her hand through a vertical circular arc to pitch a ball at 65 mph. the 0.19 kg ball is 50 cm from the pivot point at her shoulder.
- just before the ball leaves her hand, what is its centripetal acceleration?
- at the lowest point of the circle the ball has reached its maximum speed. what is the magnitude of the force her hand exerts on the ball at this point?
- at the lowest point of the circle the ball has reached its maximum speed. what is the direction of the force her hand exerts on the ball at this point?
Answers: 2
Physics, 22.06.2019 09:30, kaleahlove13
Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?
Answers: 2
Physics, 23.06.2019 02:40, smack2045
An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
Afast pitch softball player does a "windmill" pitch, moving her hand through a vertical circular arc...
Biology, 27.03.2020 20:43
Mathematics, 27.03.2020 20:43
Mathematics, 27.03.2020 20:43
Chemistry, 27.03.2020 20:43
Physics, 27.03.2020 20:43