1. What does PE stand for? Physical Education
2. Name one common PE exercise? Your choice A knee push up B piano keys
Your answer is Because of gravity
Answer:
Explanation:
Given:
- initial speed of the car,
- time taken to realize the need of braking,
<u>Distance travelled during the time span:</u>
Actually the distance travelled before stopping the car will be greater than this distance, because after the application of brakes the car will take some time to come to rest.
Answer:
64 J
Explanation:
KE = ½mv²
Given m = 8 kg and v = 4 m/s:
KE = ½ (8 kg) (4 m/s)²
KE = 64 J