Physics Kinematics Level: High School
A bird moving horizontally at a velocity 16.7 m / s folds its wings and executes a free fall . What would be its speed after 2.4 second (in m / s) ? Note : ( g = 9.81 m / s^2 )
Physics Kinematics Level: High School
One dimensional
speedy Sue , driving at 30.0 m/s , enters a one-lane tunnel . She then observes a slow moving van 155 m ahead traveling at 5.00 m/s . Sue applies her brakes but can accelerate only at -2.00 m/s^2 because the road is wet . Will there be a collision ? If yes , determine how far into the tunnel and at what time the collision occurs . If no, determine the distance of closes approach between Sue’s car and the van .
Physics Kinematics Level: High School
One dimensional
An object moves along the x axis according to the equation x(t) = (3.00 t^2 – 2.00 t + 3.00) m . determine ,a) the average speed between t = 2.00 s and t = 3.00 s .
b) the instantaneous speed at t = 2.00 s and t = 3.00 s ,
d) the instantaneous acceleration at t = 2.00 s and t = 3.00 s
Physics Kinematics Level: High School
One dimensional
A hare and a tortoise compete in a race over a course 1.00 km long . The tortoise crawls straight and steadily at its maximum speed of 0.200 m/s toward the finish line . The hare runs at its maximum speed of 8.00 m/s toward the goal for 0.800 km and then stops to tease the tortoise . How close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise wins in a photo finish ? Assume that , when moving , bother animals move steadily at their respective maximum speeds .
Physics Kinematics Level: High School
One dimensional
a) Use the data provided below to construct a smooth graph of position versus time.
b) By constructing tangents to the x(t) curve, find the instantaneous velocity of the car at several instants. (plot the instantaneous velocity versus time and , from this , determine the average acceleration of the car .
d) What was the initial velocity of the car ?
t(s),x(m)
0, 0
1.0, 2.3
2.0, 9.2
3.0, 20.7
4.0, 36.8
5.0, 57.5
Physics Kinematics Level: High School
One dimensional
A particle moves according to the equation x = 10t^2 where x is in meters and t is in seconds.a) Find the average velocity for the time interval form 2.00 s to 3.00 s .
b) Find the average velocity for time interval from 2.00 to 2.10 s .
Physics Kinematics Level: High School
Projectile
A golf ball is hit by an initial velocity of 60.0 m/s at an angle of 30.0 degrees above the horizontal. How far does it travel ?Physics Kinematics Level: High School
One dimensional
When a ball is thrown straight up, which of the following is zero at its highest point ?Velocity
Acceleration
Displacement
Physics Kinematics Level: High School
Projectile
If you increases the initial speed of a bullet by exactly 10% , the resultant range will increase by what percent ( assume air resistance can be ignored) ?10%
11%
20%
5.0%
21%
If it is fired from the same height , time remains the same.
Range = uts the range will also increase by 10%.
Physics Kinematics Level: High School
Projectile
You hit a tennis ball over the net . When the ball reaches its maximum height , its speed is :a) greater than its initial speed
b) less than its initial speed
c) equal to its initial speed
Physics Kinematics Level: High School
A boat can move at 30.0 km/h in still water . How long will it take to move 12 km downstream in a river flowing 6.0 km/h ?
Physics Kinematics Level: High School
Relative Velocity
A train traveling at 50.0 km/h approaches another train moving toward the first at 90.0 km/h . if they are 35 km apart ( on a straight track) how long does it take before they meet ?
Physics Kinematics Level: High School
One dimensional
An arrow is short vertically upward . Three seconds later , it is at a height of 35 m . What was the initial speed of the arrow ?
Physics Kinematics Level: High School
One dimensional
A car with an initial velocity of 3.5 m/s coasts with the engine off and the transmission in neutral . If the combined effect of air resistance and rolling friction causes a constant deceleration of 0.50 m/s2 , after how long a time will the car come to a stop ?
Physics Kinematics Level: High School
One dimensional
You can determine the speed of the car by measuring the time it takes to travel between mile markers in highway . How many seconds should elapse between two consecutive mile markers if the car’s average speed is 65 mi/hr ? What is the car’s average speed if it takes 65 s to travel between the mile markers ?