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
You might also like to view...
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?
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
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.