Friday

November 21, 2014

November 21, 2014

Posted by **Krista** on Thursday, March 15, 2012 at 12:36pm.

At the same constant acceleration, how many revolutions do the wheels make before stopping if your initial speed is twice as high?

- Physics -
**bobpursley**, Thursday, March 15, 2012 at 12:41pmwf^2=wi^2+2A*displacement

A= -wi^2/2(1.5rev)

if initial speed is the doubled, then w^2 term in the numerator is x4, so rev must be x4 to keep A constant.

so 4x1.5=6rev

**Answer this Question**

**Related Questions**

physics - A car initially traveling at 31.0 m/s undergoes a constant negative ...

Physics - A car initially traveling at 33.4 m/s undergoes a constant negative ...

Physics - A car initially traveling at 33.4 m/s undergoes a constant negative ...

physic - Hi!Need help please. Question:A car initially traveling at 24.0 m/s ...

physics(help!!!!!!!) - A 1200kg car going 25m/s is brought to a stop using its ...

Physics - A cyclist starts from rest and pedals so that the wheels make 7.7 ...

College Physics - A cyclist starts from rest and pedals so that the wheels make ...

phys6 - A cyclist starts from rest and pedals so that the wheels make 8.1 ...

Physics - A car travels at 64 mi/h when the brakes are suddenly applied. ...

Physics - A car is moving with a velocity of 16 m/s when the brakes are applied ...