Homework Help: physics

Posted by anupriya on Tuesday, May 22, 2012 at 8:18am.

a car is moving on a horizontal frictionless road and reches base of an upslope . what should be the speed of the car at the base of the upslope so that it can just reaCH its top without external force applied to it.(length of slope=15m, angle of slope=30degree, mass of car=250kg, gravity=10m/s2)

physics - Henry, Thursday, May 24, 2012 at 7:23pm
h = 15*sin30 = 7.5 m. = Ver. ht. of slope.

Y^2 = Yo^2 + 2g*d
Yo^2 = Y^2 - 2g*d
Yo^2 = 0 - (-20)*7.5 = 150
Yo = 12.25 m/s=Initial Ver. component of velocity.

Vo=Yo / sin30 = 12.25 / sin30=24.5 m/s
@ bottom of slope.

Answer this Question

Related Questions

PHYSICS - A car is traveling around a circular banked road without friction ...
Physics - A 1100 kg car is moving toward the north along a straight road at a ...
Physics - A 1100 kg car is moving toward the north along a straight road at a ...
Physics Help, Please! - When a car goes around a curve (without skidding), on a...
physics - Car moving down road accelerates at uniform rate 2.8 m/s/s for 4.63 s ...
Maths / Physics - A car is moving along a straight horizontal road at 82 km/h ...
PHYSICS - An object is originally moving at 13 m/s at the top of a frictionless...
physics - a car of mass 12,000 kjg is moving at 40m/s along a strong road. The ...
Physics - A car is being driven along a country road on a dark and rainy night ...
physics - A man on the top of a 40 meter tower directly overhead the road is ...

For Further Reading

First Name:
School Subject:
Answer: