DRIVERS ED+50 PTS Please answer the following questions in 4 to 5 sentences.
Explain the laws of motion and describe forces that cause objects to move, stop, speed up, and slow down. Think of some activities you do every day that are subject to laws of motion and include them in your post. Explain what plays a bigger factor with Energy of Motion, speed, or weight.

Remember that order to drive a car, you must have an understanding of the forces that act on the car, causing it to speed up, slow down, or stop.

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?