Physics Kinematics Level: Misc Level
A skateboarder, starting from rest, rolls down a 12.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.70 m/s.
a) Determine the magnitude of her acceleration, assumed to be constant.
b) If the ramp is inclined at 25.0 degree with respect to the ground,what is the component of her acceleration that is parallel to the ground. Equations of Kinematics in two dimensions, Projectile Motion.
Physics Force & Laws Of Motion Level: Misc Level
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker s foot for 0.050 s, during which time it experiences an acceleration of 340 m/s2. The ball is launched at an angle of 51 degree above the ground. Determine the horizontal and vertical components of the launch velocity.
Physics Kinematics Level: Misc Level
The altitude of a hand slider is increasing at a rate of 6.80 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m /s when the sun is directly overhead. Find the magnitude of the glider s velocity.
Physics Dimensions Level: Misc Level
A baseball player hits a triple and ends up on a third base. A baseball"diamond"is a square, each side of length 27.4 m, with home plate and the three bases on the four corners. What is the magnitude of his displacement?
Physics Kinematics Level: Misc Level
A hot - air balloon is rising upward with a constant speed of 2.50 m /s. When the balloon is 3.00 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground.
Physics Kinematics Level: Misc Level
a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.0 m /s when going down a slope for 5.0 s? b) How far does the skier travel in this time?
Physics Kinematics Level: Misc Level
Two motorcycles are traveling due east with different velocities. However, four seconds later, they have the same velocity. During this 4 second interval, motorcycle A has an averge acceleration of 2. 0 m/s2 due east, while motorcycle B has an average acceleration of 4.0 m /s2 due east. By how much did the speeds differ at the beginning of the 4- second interval, and which motorcycle was moving faster?
Equations of Kinematics for Constant Acceleration and applications of the equations of kinematics.
Physics Kinematics Level: Misc Level
The land speed record of 13.9 m/s ( 31 mi /h ) for birds is held by the Australian emu. An emu running du south in a straight line at this speed slows down to a speed of 11.0 m /s in 3.0 s. a) What is the direction of the bird s acceleration? b) Assuming that the acceleration remains the same, what is the bird s velocity after an additional 4.0 s has elapsed?
Physics Kinematics Level: Misc Level
For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, when a Ford R S 200 evolution went from zero to 26.8 m /s ( 60 mi /h ) in 3.275 s. Find the magnitude of the Car s acceleration.
Physics Vectors Level: Misc Level
A car makes a trip due north for 3 /4 ths of the time and due south 1/4 th of the time. The average northward velocity has a magnitude of 27 m/s, and the average southward velocity has a magnitude of 17 m/s. What is the average velocity, magnitude and direction, for the entire trip?
Acceleration
Physics Kinematics Level: Misc Level
In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average of 2.68 m/s, due west, turns around, and hikes with an average velocity of 0.447 m /s, due east. How far east did she walk?
Physics Kinematics Level: Misc Level
In 1954 the English runner Roger Bannister broke the 4 minute barrier for the mile with a time of 3;59. 4 S ( 3 min and 59.4 s).In 1999 the Moroccan runner Hicham el -Guerrouj set a record of 3:43. 13 s for the mile. If these 2 runners had run in the same race, each running the entire race at the average speed that earned him a place in the record books, el -Guerrouj would have won. By how many meters?
Physics Kinematics Level: Misc Level
The space shuttle travels at a speed of about 7.6 *10 3 m/s. The blink of an astronaut s eye lasts about 110 ms. How many football fields (length =91.4 m) does the shuttle cover in the blink of an eye?
Physics Kinematics Level: Misc Level
One afternoon, a couple walks 3 /4 ths of the way around a circular lake, the radius of which is 1.50 km. They start at the west side of the lake and head due south to begin with. a) What is the distance they travel ? b) What are the magnitude and direction ( relative to due east) of the couple s displacement?
Physics Rotational Mechanics Level: Misc Level
A uniforn 800 kg beam, 6 m long, is freely pivoted at P. The beam is supported in a horizontal position by a light strut, 5 m long, which is freely pivoted at Q and is loosely pinned to the beam at R. A load of mass is suspended from the end of the beam at S. A maximum compression of 22,000 N in the strut is permitted, due to safety. In Figure 11.1, the maximum mass M of the load is closest to:
A) 498 kg B) 1298 kg C) 722 kg D) 273 kg E) 1522kg
