Physics
posted by Katie .
Mutiple choice:
A car travelling at 10 m/s accelerates at 3 m/s^2. Its new velocity is
A.) 12 m/s B.) 22m/s C.) 17 m/s D.) Can not be determined.
Which of the following is not acceleration?
A.) rate of change of speed in a particular direction B.) rate of change of motion in a particular direction. C.) rate of change of velocity D.) rate of change of displacement
An object will weigh least on
A.) Jupiter B.) Pluto C.) Earth D.) Saturn
On a graph of distance verse elasped time, the slope of the tangent to the curve at any single point is
A.) average speed B.) constant speed C.) variable speed D.) instantenous speed
An object is accelerated from the rest of a rate at 2 m/s^2. At the end of 8 seconds, the magnitude of the velocity is
A.) 2.0 m/s B) 6.0 m/s C.) 8.0 m/s D.) 16 m/s
After a body has fallen freely from rest to 4.0 seconds, its velocity is apporoximentaly
A) 20 m/s B) 40 m/s C.) 60 m/s D.)80 m/s
A force with a magnitude of 100 newtons acts at a 30 degree angle from the horizon. The "X" component of this force is
a) 87 newtons B) 50 newtons C) it is at rest D) its motion is changed
An object is not considered to be in a state if equilibrium if
A) it is not moving at constant speed in a straight line B) there is an unbalanced force acting on the body
C) It is at rest D) its motion is unchanged

Physics 
Henry
1D. Cannot be determined, because we don't know the time.
2D.
5D.V = a*t = 2m/s^2 * 8s. = 16 m/s.
6B. V = Vo + g*t = 0 + 10*4 = 40 m/s.
7A. X = 100*cos 30 = 87 N.
8B.
Respond to this Question
Similar Questions

physics
A car starts from rest and accelerates uniformaly at the rate of 0.98m/s in 1hr.what is its final velocity? 
Velocity and Acceleration
A car is travelling on a highway Can it have a negative velocity & a positive acceleration at the same time? 
Physics
A car is travelling on a highway Can it have a negative velocity & a positive acceleration at the same time? 
physics
Two cars both travel along a straight road Northbound. At t = 0, the car 1 is 190.6 m further north than car 2. Also at t = 0, car 1 is travelling at 24.3 m/s, and car 2 is travelling at 5.7 m/s. Car 1 is slowing down with an acceleration … 
Physics
A car starts from rest and accelerates at a rate of 1 m/s^2 until it reaches a velocity of 7 m/s. It then travels at a constant velocity for the next 15 seconds. The driver then applies the brake, bringing the car to stop. The brakes … 
Physic
A car accelerates from 5.0m/s to 22m/s in 18 seconds, find the acceleration. 
physics
Car A is travelling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind Car B when the drive of car A accelerates his car with an acceleration of2.4 m/s2. How long does it take Car A to overtake Car B? 
Physics
A car is travelling at 2 0m/s when it pulls out to pass a truck that is travelling at only 18 m/s the car accelerates at 2 m/s square for 4 sec and then maintains this new velocity. if the car was originally 8 mtrs behind the truck … 
Physics
A car of mass 1000kg is travelling along a straight flat road at a constant speed of 30.0ms^1. It then accelerates with constant acceleration of 3.00ms^2 for 10.0s, after which it continues to travels at a constant speed. Determine: … 
Physics
A Car is travelling 20m/s when it pulls out to pass a truck that is travelling at 18 m/s. The car accelerates at 2.0m/s^2 for 7.0 seconds B) What is the car's speed at the end of the period of acceleration?