As a baseball is being caught, its speed goes from 36 to 0 m/s in about 0.004 s. Its mass is 0.145 kg. (Take the direction the baseball is thrown to be positive.)
(a) What is the baseball's acceleration in m/s2? (Indicate the direction with the sign of your answer.)
What is the baseball's acceleration in g's? (Indicate the direction with the sign of your answer.)
(b) What is the force acting on it?
As a baseball is being caught, its speed goes from 36 to 0 m/s in about...
As a baseball is being caught, its speed goes from 36 to 0 m/s in about 0.004 s. Its mass is 0.145 kg. (Take the direction the baseball is thrown to be positive.) (a) What is the baseball's acceleration in m/s2? (Indicate the direction with the sign of your answer.) What is the baseball's acceleration in g's? (Indicate the direction with the sign of your answer.) (b) What is the force acting on it?
As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.37 s. (a) What is the acceleration of the baseball? (b) What is the acceleration in g's?
2. As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.28 s. (a) What is the acceleration of the baseball? (b) What is the acceleration in g's?
A race car rounds a curve at 59 m/s. The radius of the curve is 403 m, and the car's mass is 640 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.) (a) What is the car's (centripetal) acceleration? (b) What is it in g's? (enter value to 3 decimal places) (c) What is the centripetal force acting on the car?
1. A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the ball to reach its maximum height. (a) Find the ball's initial velocity. (b) Find the height it reaches. 2. The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.40 m/s2 for 4.30 s, making straight skid marks 64.6...
A baseball pitcher throws a baseball horizontally at a linear speed of 42.5 m/s (about 95 mi/h). Before being caught, the baseball travels a horizontal distance of 15.3 m and rotates through an angle of 52.1rad. The baseball has a radius of 3.67 cm and is rotating about an axis as it travels, much like the earth does. What is the tangential speed of a point on the "equator" of the baseball? m/s
A baseball with a mass of 140 g is thrown horizontally with a speed of 39.8 m/s (89 mi/h) at a bat. The ball is in contact with the bat for 1.15 msand then travels straight back at a speed of 45.2 m/s (101 mi/h). Determine the average force (in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the...
A baseball with a mass of 141 g is thrown horizontally with a speed of 40.1 m/s (90 mi/h) at a bat. The ball is in contact with the bat for 1.05 ms and then travels straight back at a speed of 45.2 m/s (101 mi/h). Determine the average force exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming...
A baseball with a mass of 137 g is thrown horizontally with a speed of 40.4 m/s (90 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.1 m/s (101 mi/h). Determine the average force in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of...
EXERCISE You are traveling along an interstate highway at 35.0 m/s (about 79 mph) when a truck stops suddenly in front of you. You immediately apply your brakes and cut your speed in half after 5.0 s. Hint (a) What was your acceleration (in m/s2), assuming it was constant? (Assume you are initially traveling in the positive direction. Indicate the direction with the sign of your answer.) -3.5 m/s2 (b) How long (in s) did it take you to stop...