A 20-ton truck collides with a 1500-lb car. Which of the following statements must be true?
A) During the collision, the force on the truck is smaller than the force on the car.
B) The car did not slow down during the collision, but the truck did.
C) During the collision, the force on the truck is equal to the force on the car.
D) The truck did not slow down during the collision, but the car did.
E) During the collision, the force on the truck is greater then the force on the car.
C
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The night sky is dark because the universe is not infinitely old
Indicate whether the statement is true or false
Which type of asteroid is classified as rocky, bright, and reddish?
a. C-type b. F-type c. M-type d. S-type e. V-type
If you observe the night sky in the direction of the North Star, you will observe that
A) the other stars near the north star move along clockwise circles around the north star during the night. B) the north star moves westward across the sky during the night. C) the other stars near the north star move in straight lines from east to west during the night. D) the other stars near the north star move along counterclockwise circles around the north star during the night. E) the north star moves eastward across the sky during the night.
The temperature of boiling water is
A) 100°C. B) 212°F. C) both of these