Mary and Debra stand on a snow-covered roof. They both throw snowballs with the same initial speed, but in different directions.
Mary throws her snowball downward, at 30 below the horizontal; Debra throws her snowball upward, at 30 above the horizontal. Which of the following statements are true about just before the snowballs reach the ground below? (There could be more than one correct choice.) A) Debra's snowball will stay in the air longer than Mary's snowball.
B) Mary's snowball will stay in the air longer than Debra's snowball.
C) Both snowballs will take the same amount of time to hit the ground.
D) Debra's snowball has exactly the same acceleration as Mary's snowball.
E) Mary's snowball has a greater downward acceleration than Debra's snowball.
Question 2
A satellite with a rest mass of 200 kg and a speed of 0.800c and a second satellite with a rest mass of 100 kg and a speed of 0.600c are traveling toward each other in deep space. The satellites collide and somehow manage to stick together.
What is the rest mass of the combined object after the collision? A) 300 kg
B) 389 kg
C) 416 kg
D) 457 kg
E) 587 kg
The rapid speed of cAMP production
A bull elk in spring, shedding its winter coat and with its antlers covered in velvet
Snow leopard
Stand in a doorway and hook your fingertips on both sides about chest level or lower.
Clear the tarsals, metatarsals, and toes. Stand at the end of the table, support the plantar surface ...
The penny shown below is covered with about 180 milligrams of sodium