1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to the horizontal. Assume that friction can be ignored. (a) What is the acceleration of the car? (b) How much time elapses before it reaches the bottom of the track?

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter5: The Laws Of Motion
Section: Chapter Questions
Problem 5.42P: Two objects are connected by a light string that passes over a friction less pulley as shown in...
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1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined
at 20.0° to the horizontal. Assume that friction can be ignored. (a) What is the
acceleration of the car? (b) How much time elapses before it reaches the bottom of the
track?
2. A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of
110.0 m. (a) Neglecting air resistance, calculate the shell's velocity when it leaves the
mortar. (b) What is the force on the shell in the mortar?
3. Find the tension in each of the 3 cables supporting the traffic lights
41.0
63.0
T1
T2
200 N
4. Shown below are two carts conected
d by cord that passes over a smal inctionless
Transcribed Image Text:1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to the horizontal. Assume that friction can be ignored. (a) What is the acceleration of the car? (b) How much time elapses before it reaches the bottom of the track? 2. A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of 110.0 m. (a) Neglecting air resistance, calculate the shell's velocity when it leaves the mortar. (b) What is the force on the shell in the mortar? 3. Find the tension in each of the 3 cables supporting the traffic lights 41.0 63.0 T1 T2 200 N 4. Shown below are two carts conected d by cord that passes over a smal inctionless
1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined
at 20.0° to the horizontal. Assume that friction can be ignored. (a) What is the
acceleration of the car? (b) How much time elapses before it reaches the bottom of the
track?
2. A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of
110.0 m. (a) Neglecting air resistance, calculate the shell's velocity when it leaves the
mortar. (b) What is the force on the shell in the mortar?
3. Find the tension in each of the 3 cables supporting the traffic lights
41.0
63.0
T2
200 N
4. Shown below are two carts connected by a cord that passes over a small frietionless
pulley. Each cart rolls freely with negligible friction. Calculate the acceleration of the
carts and the tension in the cord.
Transcribed Image Text:1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to the horizontal. Assume that friction can be ignored. (a) What is the acceleration of the car? (b) How much time elapses before it reaches the bottom of the track? 2. A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of 110.0 m. (a) Neglecting air resistance, calculate the shell's velocity when it leaves the mortar. (b) What is the force on the shell in the mortar? 3. Find the tension in each of the 3 cables supporting the traffic lights 41.0 63.0 T2 200 N 4. Shown below are two carts connected by a cord that passes over a small frietionless pulley. Each cart rolls freely with negligible friction. Calculate the acceleration of the carts and the tension in the cord.
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