If a car is coming to a stop, what is the relationship between the directions of its velocity and acceleration? What direction is the force due to the brakes? What direction is the frictional force?

If a car is coming to a stop, what is the relationship between the directions of...
An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity and acceleration vectors? The velocity and acceleration vectors point in opposite directions. The velocity and acceleration vectors are perpendicular. The velocity vector points in a direction tangent to the circular path. The acceleration is zero. The velocity vector points toward the center of the circular path. The acceleration is zero. The velocity and acceleration vectors point in the...
You are in your favorite elevator, coming to a stop as you go from the ground floor to the 4th floor. a) What forces are acting on you as you are coming to a stop in the elevator? Normal force upward and Force of gravity upward Normal force downward and Force of gravity upward Normal force downward and Force of gravity downward Normal force upward and Force of gravity downward Just the Force of gravity downward b) As you are...
At the scene of an accident, skid marks from a car coming to a stop are measured as 23.5m long. The posted speed limit is 45 mph and you need to brake on a downhill section of a road which makes angle θ with the horizontal. Find the force in the direction of your displacement. (final answer does not contain normal force). Also, use the Work-Energy Theorem with this force to find the distance required to come to a complete...
A car moving at 48 m/s brakes to a stop in 6 seconds. What is its acceleration?
The driver of a car of mass M which is moving along a straight road with initial speed v0 sees a deer in her headlights, and reacts quickly, lifting her foot of the gas and applying the brake pedal with maximum force. The anti-lock brakes cause the largest possible static friction force to be applied on the tires by the road, which continue to roll so the car does not skid. The coefficient of static friction between the tires and...
What average force is required to stop a 1700 kg car in 9.0 s if the car is traveling at 85 km/h ? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is in the direction opposite to the initial velocity.
What average force is required to stop a 1900 kg car in 8.0 s if the car is traveling at 100 km/h ? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is in the direction opposite to the initial velocity.
3. During a very quick stop, a car decelerates at 6.2 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires (and that they do not slip on the pavement). a. What is the angular acceleration of its tires in rad/s2, assuming they have a radius of 0.28 m and do not slip on the pavement? b. How many revolutions do the tires make before coming to rest, given their initial...
A car is 162 m from a stop sign and traveling toward the sign at 27 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.200 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign?
A car is 137 m from a stop sign and traveling toward the sign at 25 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.200 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign?