Shiela is competes in the long jump event. If she jumps at an angle 22.7° above horizontal, and with an initial velocity of 9.44 m/s, what will her range be? Select one:

a.6.46 m

b. 5.10 m

c. 7.22 m

d.8.04 m

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Why should seat belts not be mandatory quick plz