1- A Prius accelerates from 0 to 60 miles per hour in 10.9 seconds. What is the

Question

1- A Prius accelerates from 0 to 60 miles per hour in 10.9 seconds. What is the acceleration of the car during this time? [To save you conversions, I’ll tell you that 60mph is the same as 26.8 m/s.] a. 2.5 m/s/s b. 2.5 g’s c. 5.5 m/s/s d. 5.5 g’s e. 292.12 m/s/s f. 29.8 g’s

2- At an altitude of 200 km, the downward force of gravity on an Earth satellite (compared to the force on the surface of the Earth):

the same

a little bit weaker

a lot weaker

a little bit stronger

a lot stronger

3- Molecular motion stops at

–272 C

0C

–273 F

–32C

4- An airplane can detect buried oil or water in the ground from:

its radioactivity

its emitted plasma

its weaker gravity

its effect on air resistance

5- Which of the following has the lowest orbit?

weather satellite

spy satellite

GPS

TV satellite

Explanation / Answer

conversion

60 mph = 26.8 m/sec

initial velocity is Vo = 0 m/sec

final velocity is V = 26.8 m/sec

time taken is t= 10.9 sec

then

accelaration is a = (V-Vo)/t = (26.8-0)/10.9 = 2.46 m/s^2

so the correct choice is a) 2.5 m/s/s

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.