A cyclist rides at a velocity if 12m/s. if the cyclist deceleates a rate of 1.5m/s. how long will take her to reach a velocity of 3m/s? 1)identify your variables -what is what ?
2)pick your equation
3)plug in and solve

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Could someone . i have tried to solve myself but my calculation is off

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is