A car is moving with constant acceleration as it passes two checkpoints that are 30 m apart. If the time taken between checkpoints is 4 sec and the car's speed at the first checkpoint is 5m/sec, then the acceleration of the car (in m/sec?) is . 3.75 . 1.25 . -1.25 O d. 2.5 Question 3 At the maximum height of the projectile motion Answer saved O a. the y-component of its acceleration is constant O b. the x-component of its acceleration is zero O c. the y component of its velocity is zero Marked out of 1.50 * Remove flag d. All answers are correct Clear my choice