A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is 10 m/s2
a. True
b. False
Indicate whether the statement is true or false
False
You might also like to view...
Multiple-Object Accelerating Systems: As shown in the figure, a 10-kg block on a perfectly smooth horizontal table is connected by a horizontal string to a 63-kg block that is hanging over the edge of the table. What is the magnitude of the acceleration of the 10-kg block when the other block is gently released?
A. 8.5 m/s2 B. 8.1 m/s2 C. 7.5 m/s2 D. 9.0 m/s2
A river flows toward the East at 1.5 m/s. Steve can swim 2.2 m/s in still water. If he wishes to cross the river so that his direction is northward, what direction relative to the water must he swim?
a. 
b. 
c. 
d. 
A 6.0 ? and a 12. ? resistor are connected in series to a 36. V battery. What power is dissipated by the 12.0 ? resistor?
A) 216. W B) 486. W C) 12. W D) 24. W E) 48. W
The pressure at the bottom of a glass filled with water (? = 1 000 kg/m3) is P. The water is poured out and the glass is filled with ethyl alcohol (? = 806 kg/m3). The pressure at the bottom of the glass is now
1.smaller than P. 2.equal to P. 3.larger than P. 4.indeterminate.