I think it's The fossil record. The same animal fossil is in Africa and South America. The animal could have not swim across so its the fossil record
Answer:
The work done is 5880 J
Explanation:
Recall the formula for work as force times distance, therefore in this case the force is that oppose to the gravitational force on the car(of magnitude m * g), and the distance is 0.5 meters.
Then:
Work = 1200 * 9.8 * 0.5 J = 5880 J
The planes speed as if it was velocity they would've said 450 miles per hour and a direction