An automobile increases its speed uniformly from 22 km/h to 71 km/h in 0.44 min. A...
1)An automobile driver increases the velocity at a constant rate from 25 km/h to 55 km/h in 0.50 min. A bicycle rider speeds up at a constant rate from rest to 30 km/h in 0.50 min. Calculate (a) the driver’s acceleration and (b) the rider’s acceleration.
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 46 m in a straight line, reaching a final speed of 95 km/h. (a) Determine the cheetah's average acceleration during the short sprint. m/s2 (b) Find its displacement at t = 3.2 s. (Assume the cheetah maintains a constant acceleration throughout the sprint.) m
Consider the impact of an automobile on a barrier. The initial speed is 40 km/h, and the automobile comes to rest within a distance of 0.6 m, with constant deceleration. If the mass of the automobile is 1520 kg, what is the magnitude of the force acting on the automobile during the acceleration? N?
a rocket increases its speed from 30 km per second 280 km per second in 10 seconds calculate the average acceleration of the rocket and the distance of Rocket move through
A person takes a trip, driving with a constant speed of 97.5 km/h, except for a 22.0-min rest stop. If the person's average speed is 72.6 km/h, find the following. (a) How much time is spent on the trip? (b) How far does the person travel? A truck covers 40.0 m in 8.65 s while uniformly slowing down to a final velocity of 3.40 m/s. (a) Find the truck's original speed. (b) Find its acceleration.
A large rotating cylinder uniformly
increases in angular speed from rest to 0.220 rev/s in 31.0 s. What
is its angular acceleration in radians per second per second?
(a) A large rotating cylinder uniformly increases in angular speed from rest to 0.220 rev/s in 31.0 s. What is its angular acceleration in radians per second per second? rad/s2 (b) The same cylinder again starts from rest and accelerates uniformly in the same time interval, but now the angular acceleration is...
A train accelerates from 10 km/h to 110. km/h in 2 min 15 s. Find its acceleration (in M/s2).
A motorboat traveling on a straight course slows uniformly from 70 km/h to 30 km/h in a distance of 60 m . What is the magnitude of the boat’s acceleration?
An automobile of mass m=1600kg travels at a speed of of 35 km/h. when the driver jams on the brakes, causing all four wheels to lock, the automobile skids to rest in 7m. determine the magnitude of the normal reactions and of the friction force at each wheel as the automobile skidded to rest. CG is 400mm from surface and 1200mm away from both wheels a and b.
A speedboat increases its speed uniformly from 30 m/s to 40 m/s in a distance of 300 m. Find a. the magnitude of its acceleration and b. the time it takes the boat to travel the 300 m distance.