A sports car and a moving van move at the same speed when they crash into a cement wall and stop equally quickly. The vehicle to have the greater force of impact will be
1) the sports car,
2) the van,
3) neither, for they experience equal forces of impact
because
4) they are traveling at the same speed.
5) the van's momentum is much greater.
6) the sport car has a greater change in velocity upon impact.
7) they both have equal momentum.
Answer: 2, 5
You might also like to view...
If thermal radiation passes through an atmosphere such that its speed is decreased to 2.1 x 10^8 m/s, determine the wavelength bandwidth of the visible portion of the thermal radiation. Assume that the frequency bandwidth remains unchanged from that of radiation passing through a vacuum.
What will be an ideal response?
Burl and Paul have a total weight of 1300 N. The tensions in the supporting ropes that support their scaffold add to 1700 N. The weight of the scaffold itself must be
A) 300 N. B) 400 N. C) 500 N. D) 600 N.
Power: A certain ac signal at 1000 Hz is applied across an inductor and a 100-? resistor. If the power factor of the circuit is 0.400, what is the impedance of this circuit?
A. 150 ? B. 200 ? C. 250 ? D. 100 ? E. 300 ?
Large icebergs in the Arctic and Antarctic form as
A) frozen seawater thickens. B) sea ice forms next to continental land. C) glaciers calve into the sea. D) alpine glaciers melt in Arctic and Antarctic waters.