An object travels 7.5 m/s toward the West and under the influence of a constant net force of 5.2 kN, 4.3 s later, it is travelling 2.5 m/s toward the East. What is its mass?
A. 2200 kg
B. 4500 kg
C. 6000 kg
D. 12000 kg
A. 2200 kg
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When light from air passes through a prism, light of all frequencies
A) slow down. B) remain at speed c. C) speed up. D) none of the above
In a relay race, runner A is carrying the baton and has a speed of 3.00 m/s. When he is 25.0 m behind the starting line, runner B starts from rest and accelerates at 0.100 m/s2
How long afterwards will A catch up with B to pass the baton to B? A) 5.17 s B) 10.0 s C) 11.9 s D) 20.4 s E) A never catches up.
A convex mirror will allow you to see large areas normally hidden from your view
a. True b. False Indicate whether the statement is true or false
Relative Velocity: A 960-m wide river flows at 16 m/s as shown in the figure. Alice and John have a race in identical boats which each travel 20 m/s in still water. Alice leaves point A and steers so that she goes straight to point B directly across and then back to A. John leaves point A and steers up to point C (960 m upstream) and then returns to A.(a) Which person arrives back at point A first?(b) How much sooner than the loser does the winner arrive back at point A?
What will be an ideal response?